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