Farz0l1x

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Jun 3rd, 2023
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  1. from random import randint
  2. A = [randint(1, 1000) for i in range(100)]
  3. count = 0
  4. for i in range(len(A)):
  5. for j in range(i + 1, len(A)):
  6. if (A[i] * A[j]) % 15 == 0:
  7. count += 1
  8. print(count)
  9.  
  10. k_15 = 0
  11. k_3 = 0
  12. k_5 = 0
  13. for i in range(len(A)):
  14. if A[i] % 15 == 0:
  15. k_15 += 1
  16. elif A[i] % 3 == 0:
  17. k_3 += 1
  18. elif A[i] % 5 == 0:
  19. k_5 += 1
  20. k = len(A) - k_15
  21. print(k * k_15 + k_3 * k_5 + k_15 * (k_15 - 1) // 2)
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