vadim_sharaf

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Sep 25th, 2021
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Python 0.17 KB | None | 0 0
  1. def F(a, b):
  2.     if a > b:
  3.         return 0
  4.     if a == b:
  5.         return 1
  6.     if a < b:
  7.         return F(a+1, b)+F(a*2, b)
  8. print(F(1, 21)- (F(1, 10)* F(10, 21)))
  9.  
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