#include<bits/stdc++.h>
using namespace std;
#define el "\n"
#define ll long long
#define ull unsigned long long
#define se second
#define fi first
#define be begin()
#define en end()
#define Faster cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
int main()
{
    Faster;
    int n; cin >> n;
    ll a[n + 1];
    a[0] = 0;
    for(int i = 1; i <= n; i++)
    {
        cin >> a[i];
        a[i] = a[i] + a[i-1];
    }
    int q; cin >> q;
    while(q--)
    {
        int i, j;
        cin >> i >> j;
        cout << a[j + 1] - a[i] << el;
    }

}