diff --git a/12.12/str int/link.txt b/12.12/str int/link.txt
new file mode 100644
index 0000000..7613ff5
--- /dev/null
+++ b/12.12/str int/link.txt	
@@ -0,0 +1 @@
+https://s407560.students.wmi.amu.edu.pl/
\ No newline at end of file