#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main() {
    int n; cin >> n;
    vector<int> v(n + 1);
 
    for (int i = 1; i <= n; i++) {
        cin >> v[i];
 
        if (i)
            v[i] += v[i - 1];
    }
 
    int m; cin >> m;
 
    while (m--) {
        int x; cin >> x;
 
        int ans = -1;
 
        int pos = lower_bound(v.begin(), v.end(), x) - v.begin();
 
        if (pos <= n)
            ans = pos;
 
        cout << ans << endl;
    }
}

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