Ещё немного

uts/uts_17_aut_py/dist_sad/A.py

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+import sys, math
+
+ID = "quadros"
+sys.stdin = open(ID + ".in", "r")
+sys.stdout = open(ID + ".out", "w")
+n = int(input())
+n = n // 2
+n = int(math.sqrt(n))
+print(n)