#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;
    }
}