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  1. #include <bits/stdc++.h>
  2. #define ll long long int
  3. using namespace std;
  4.  
  5. ll f( int n, int sum)
  6. {
  7. 	if(6*n<sum)
  8. 	{
  9. 		return 0;
  10. 	}
  11. 	if(n>sum)
  12. 	{
  13. 		return 0;
  14. 	}
  15. 	if(n>1000 || sum>1000)
  16. 	{
  17. 		return 0;
  18. 	}
  19. 	ll A[n+1][sum+1];
  20. 	memset(A,0,sizeof(A));
  21. 	for( int i=1; i<=sum && i<=6; i++)
  22. 	{
  23. 		A[1][i] = 1;
  24. 	}
  25. 	for( int i=1; i<=n; i++)
  26. 	{
  27. 		for( int j=1; j<=sum; j++)
  28. 		{
  29. 			for( int k=1; k<=6 && k<=j; k++)
  30. 			{
  31. 				A[i][j] += A[i-1][j-k];
  32. 			}
  33. 		}
  34. 	}
  35. 	A[n][sum]*=100;
  36. 	int y = n;
  37. 	while(y--)
  38. 	{
  39. 		A[n][sum]/=6;
  40. 	}
  41. 	return A[n][sum];
  42. }
  43.  
  44. int main()
  45. {
  46. 	int t;
  47. 	cin>>t;
  48. 	while(t--)
  49. 	{
  50. 		int n,m;
  51. 		cin>>n>>m;
  52. 		cout<<f(n,m)<<endl;
  53. 	}
  54. }
Success #stdin #stdout 0s 3464KB
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https://ideone.com/rksW1p
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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