fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	int n , k;
  7. 	cin>>n;
  8. 	cin>>k;
  9. 	int arr[n];
  10. 	for(int i = 0; i<n ; i++){
  11. 		cin>>arr[i];
  12. 	}
  13. 	unordered_map<int,int> mpp;
  14. 	mpp[0] = 1;
  15.  
  16. 	for(int i = 1; i< n ; i++){
  17. 		arr[i] = arr[i-1] + arr[i];
  18. 	}
  19. 	int count = 0;
  20. 	for(int j = 0; j<n ; j++){
  21. 		int r = arr[j] - k;
  22. 		count += mpp[r];
  23. 		mpp[arr[j]] += 1;
  24.  
  25. 	}
  26. 	cout<<count<<endl;
  27. 	return 0;
  28. }
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
copy 
10
8
2 2 3 5 2 2 3 2 2 1
stdout
copy 
2
https://ideone.com/Lv7rxJ
language:
C++ (gcc 8.3)
created:
8 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!