9 lines
277 B
Python
9 lines
277 B
Python
import sys
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from math import factorial
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problem_name = str('combs')
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sys.stdin = open(problem_name + ".in", "r")
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#sys.stdout = open(problem_name+".out", "w")
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n, k = list(map(int, input().split()))
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print(int(factorial(n)/(factorial(k)*factorial(n-k))))
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f = open('safdsf')
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f.close() |