#include <iostream>
#include <vector>

using namespace std;

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

    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }

    vector<int> s(n);
    s[0] = a[0];
    for (int i = 1; i < n; i++) {
        s[i] = s[i - 1] + a[i];
    }

    int m;
    cin >> m;

    for (int i = 0; i < m; i++) {
        int l, r;
        cin >> l >> r;
        cout << s[r] - s[l - 1] << endl;
    }
    
    return 0;
}