#include <iostream>
using namespace std;
int main() 
{
    int n, m;
    cin >> n;
    int a[n];
    for (int i = 0; i < n; i++) 
    {
        cin >> a[i];
    }
    cin >> m;
    while (m--) 
    {
        int l, r;
        cin >> l >> r;
        int sum = 0;
        for (int i = l; i <= r; i++) 
        {
            sum += a[i-1];
        }
        cout << sum << endl;
    }
    return 0;
}