fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main() {
  4.     int n,k; cin>>n>>k;
  5.     int a[n];
  6.     for(int i=0;i<n;i++) cin>>a[i];
  7.     unordered_map<int,int> mp;
  8.     mp[0]=1;
  9.     int s=0,ans=0;
  10.     for(int j=0;j<n;j++){
  11.         s+=a[j];
  12.         ans+=mp[s-k];
  13.         mp[s]++;
  14.     }
  15.  
  16.     cout<<ans;
  17. }
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
copy 
5 5
1 2 3 2 5
stdout
copy 
3
https://ideone.com/SZjBOh
10
language:
C++14 (gcc 8.3)
created:
1 day 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!