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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int T;
  6. 	cin >> T;
  7. 	for (int i = 0; i < T; i++) {
  8. 		int n, k;
  9. 		unsigned long long int licznik = 1, mianownik = 1;
  10. 		cin >> n >> k;
  11. 		if (n - k > k) {
  12. 			for (int j = n - k + 1; j <= n; j++) {
  13. 				licznik *= j;
  14. 			}
  15. 			for (int j = 1; j <= k; j++) {
  16. 				mianownik *= j;
  17. 			}
  18. 		}
  19. 		else {
  20. 			for (int j = k + 1; j <= n; j++) {
  21. 				licznik *= j;
  22. 			}
  23. 			for (int j = 1; j <= n - k; j++) {
  24. 				mianownik *= j;
  25. 			}
  26. 		}
  27. 		cout << licznik / mianownik;
  28. 		cout << "\n";
  29. 	}
  30. 	return 0;
  31. }
Success #stdin #stdout 0.01s 5516KB
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https://ideone.com/yg5DKp
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
secret

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