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  1. #include <iostream>
  2. #include <climits>
  3. using namespace std;
  4.  
  5. int main() {
  6.  
  7. 	long long n,x;
  8. 	cin>>n>>x;
  9.  
  10. 	long long a[n];
  11. 	for(long long i=0;i<n;i++)
  12. 	{
  13. 		cin>>a[i];
  14. 	}
  15.  
  16. 	long long DP[x+1];
  17.  
  18.  
  19. 	for(long long j=0;j<=x;j++)
  20. 	{
  21. 		DP[j]=INT_MAX;
  22. 	}
  23.  
  24. 	DP[0]=0;
  25.  
  26. 	for(long long i=1;i<=n;i++)
  27. 	{
  28. 		for(long long j=0;j<=x;j++)
  29. 		{
  30. 			if(j >= a[i-1])
  31. 			{
  32. 				DP[j] = min(DP[j-a[i-1]]+1,DP[j]);
  33. 			}
  34. 		}
  35. 	}
  36.  
  37.  
  38. 	if(DP[x] == INT_MAX)
  39. 	{
  40. 		cout<<-1<<endl;
  41. 	}
  42. 	else
  43. 	{
  44. 		cout<<DP[x]<<endl;
  45. 	}
  46. 	return 0;
  47. }
Success #stdin #stdout 0s 5280KB
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https://ideone.com/3TrS8w
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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