#axiom
C(0)
#rules
C(n) : n < 200 -> C(n+1)[+(137.5*n)f(0.02*n^0.5)B]
C(n) : n < 400 -> C(n+1)[+(137.5*n)f(0.02*n^0.5)Y]
C(n) : n < 600 -> C(n+1)[+(137.5*n)f(0.02*n^0.5)O]
C(n) : n >= 600 -> C(n+1)[+(137.5*n)f(0.02*n^0.5)P]
#rules end