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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.  
  6. 	int n,x;
  7. 	cin>>n>>x;
  8.  
  9. 	int a[n];
  10. 	for(int i=0;i<n;i++)
  11. 	{
  12. 		cin>>a[i];
  13. 	}
  14.  
  15. 	int i=0;
  16. 	int j=0;
  17. 	int count1=0;
  18. 	int sum=0;
  19. 	while(i < n)
  20. 	{
  21. 		//cout<<"sum="<<sum<<" j="<<j<<" a["<<i<<"]="<<a[i]<<endl;
  22. 		if(sum == x)
  23. 		{
  24. 			count1++;
  25. 			sum-=a[j];
  26. 			j++;
  27. 		}
  28. 		else if(sum < x)
  29. 		{
  30. 			sum+=a[i];
  31. 			i++;
  32. 		}
  33. 		else
  34. 		{
  35. 			sum-=a[j];
  36. 			j++;
  37. 		}
  38. 	}
  39.  
  40. 	while(j < n)
  41. 	{
  42. 		if(sum == x)
  43. 		{
  44. 			count1++;
  45. 			sum-=a[j];
  46. 			j++;
  47. 		}
  48. 		else 
  49. 		{
  50. 			sum-=a[j];
  51. 			j++;
  52. 		}
  53. 	}
  54.  
  55.  
  56. 	cout<<count1<<endl;
  57.  
  58. 	return 0;
  59. }
Success #stdin #stdout 0.01s 5288KB
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stdin
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5 7
2 4 1 2 7
stdout
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3
https://ideone.com/AqrI2D
language:
C++14 (gcc 8.3)
created:
8 days ago
visibility:
public

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