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nq1s788
Jun 7th, 2025
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  1. #https://inf-ege.sdamgia.ru/problem?id=5057
  2. def f(n):
  3.     if n == 1:
  4.         return 3
  5.     if n == 2:
  6.         return 3
  7.     return 5 * f(n - 1) - 4 * f(n - 2)
  8.  
  9.  
  10. print(f(15))
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