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  1. #include <iostream>
  2. #include <cstring>
  3. #define MAX 31
  4. using namespace std;
  5.  
  6. int main() {
  7. 	int tests, n, m;
  8. 	long long c[MAX][MAX];
  9. 	memset(c, 0, sizeof(c));
  10. 	for(int i = 0; i < MAX; i++) c[i][0] = 1;
  11. 	for(int i = 0; i < MAX; i++)
  12. 		for(int j = 1; j <= MAX; j++)
  13. 			c[i][j] = c[i - 1][j] + c[i - 1][j - 1];
  14. 	cin >> tests;
  15. 	while(tests--) {
  16. 		cin >> n >> m;
  17. 		cout << c[n][m - 1] << "\n";
  18. 	}
  19.  
  20. 	return 0;
  21. }
Success #stdin #stdout 0s 15232KB
comments (?)
stdin
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6
2 1
7 2
3 1
5 4
3 2
9 2
stdout
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1
7
1
10
3
9
https://ideone.com/fqmrAT
7534 на сайт
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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