fork download
copy 
  1. #include<bits/stdc++.h>
  2. #define faster ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  3. #define ll long long
  4. using namespace std;
  5. int main()
  6. {
  7.     faster
  8.     ll n,x,i,res=0,l=0,t=0,r;
  9.     cin>>n>>x;
  10.     vector<ll> a(n);
  11.     for(i=0;i<n;i++) cin>>a[i];
  12.     for(r=0;r<n;r++)
  13.     {
  14.         t+=a[r];
  15.         while(t>x&&l<=r)
  16.         {
  17.             t-=a[l];
  18.             l++;
  19.         }
  20.         if(t==x) res++;
  21.     }
  22.     cout<<res;
  23. }
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin
copy 
5 7
2 4 1 2 7
stdout
copy 
3
https://ideone.com/jAhyoj
language:
C++14 (gcc 8.3)
created:
12 days 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!