#include <iostream>
#include <vector>

using namespace std;

int main() {
    // ????????? ??????????? ????? ? ??????
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n;
    if (!(cin >> n)) return 0;

    // ????????? long long ?? ???? ?? ????? ??????, ???? ?? ???? ??????? ????
    vector<long long> prefix_sum(n);
    long long current_sum = 0;

    for (int i = 0; i < n; i++) {
        int earning;
        cin >> earning;
        current_sum += earning;
        prefix_sum[i] = current_sum;
    }

    int m;
    cin >> m;
    while (m--) {
        int a, b;
        cin >> a >> b;

        if (a == 0) {
            cout << prefix_sum[b] << "\n";
        } else {
            cout << prefix_sum[b] - prefix_sum[a - 1] << "\n";
        }
    }

    return 0;
}