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- #include <bits/stdc++.h>
- using namespace std;
- int main() {
- long n,k,x,a=0,s=0;
- cin>>n>>k;
- map<long,long>c;
- c[0]=1;
- while(n--){
- cin>>x;
- s+=x;
- a+=c[s-k];
- c[s]++;
- }
- cout<<a;
- return 0;
- }
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