Untitled

#include <fstream>

using namespace std;
ifstream fin("summit.in");
ofstream fout("summit.out");
long long n,b[1000001],x;
int CB(int n,int i)
{
    int st=1, dr=i;
    while(st<=dr)
    {
        int mij=st+(dr-st)/2;
        if(b[mij]==n)
            return mij;
        else if(b[mij]<n)
            st=mij+1;
        else dr=mij-1;
    }
    return 0;
}
void citire()
{
    fin>>n;
    for(int i=1;i<=n;i++)
    {
        fin>>x;
        b[i]=b[i-1]+x;
        int y=CB(x,i);
        if(b[y]==x) fout<<y<<'\n';
        else fout<<0<<'\n';
    }
}
int main()
{
    citire();
    return 0;
}