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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int m, n;
  6. 	cin >> n >> m;
  7. 	if (m > n) swap(n, m);
  8. 	long long den = 1, ways = 1; // den - знаменатель, ways - количество способов.
  9. 	for (int i = 0; i < m - 1; i++) {
  10. 		ways *= n + i;
  11. 		if (ways % den == 0) {
  12. 			ways /= den;
  13. 			den++;
  14. 		}
  15. 	}
  16. 	cout << ways;
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 4496KB
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https://ideone.com/FB4RIh
умная черепашка
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
secret

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