#include <iostream>
#include <algorithm>
#include <queue>
using namespace std;


int main() {
    int n;
    cin >> n;

    vector<int> v(n);
    vector<int> pref_sum(n);

    int sum = 0;
    for(int i = 0; i < n; i++) {
        cin >> v[i];

        sum += v[i];
        pref_sum[i] = sum;
    }

    int q;
    cin >> q;

    for(int i = 0; i < q; i++) {
        int x, y;
        cin >> x >> y;

        if(x == 0) {
            cout << pref_sum[y] << endl;
        }
        else {
            cout << pref_sum[y] - pref_sum[x - 1] << endl;
        }
    }



}