Sofya_Soloveva_

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Jul 10th, 2019
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Python 0.08 KB | None | 0 0
  1. N = int(input())
  2. k = 1
  3. while  N > 1:
  4.     k = k *(N * (N-1))
  5.     N = N - 2
  6. print(k)
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