879 KiB
879 KiB
positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive positive