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12 lines
218 B
12 lines
218 B
##!/usr/bin/env python3
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def factorial(x):
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result = 1
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for i in range(2, x + 1):
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result *= i
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return result
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if __name__ == "__main__":
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import sys
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x = int(sys.argv[1])
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print(factorial(x))
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