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


int main()
{
    int n;
    cin >> n;
    
    int niza[n];
    int pref_sum[n];
    int sum = 0;
    for(int i = 0; i < n; i++) {
        cin >> niza[i];
        sum += niza[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;
        }
    }
    return 0;
}