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desislava_topuzakova

03. Combinations

May 15th, 2021
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Python 0.48 KB | None | 0 0
  1. # 3 числа
  2. # n1 -> [0; n]
  3. # n2 -> [0; n]
  4. # n3 -> [0; n]
  5. n = int(input())
  6. count = 0 # броим всички валидни комбинации
  7. for n1 in range(0, n + 1):
  8.     for n2 in range(0, n + 1):
  9.         for n3 in range(0, n + 1):
  10.             # всчики комбинации от числата n1, n2, n3
  11.             # проверка дали комбинацията е валидна
  12.             if n1 + n2 + n3 == n:
  13.                 count += 1
  14.  
  15. print(count)
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