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- #include <bits/stdc++.h>
- using namespace std;
- int main()
- {
- int n;
- cin>>n;
- int niza[n];
- for(int i=0; i<n; i++)
- {
- cin>>niza[i];
- }
- int cnt=0;
- unordered_map<int,vector<int> > mapa;
- int zbir=0;
- for(int i=0; i<n; i++)
- {
- zbir+=niza[i];
- if(zbir==0)cnt++;
- if(mapa.find(zbir) != mapa.end())
- {
- cnt+=mapa[zbir].size();
- }
- mapa[zbir].push_back(i);
- }
- cout<<cnt<<endl;
- return 0;
- }
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