#include <iostream>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
	cin.tie(0);
    cout.tie(0);
    long long n;
    cin >> n;
    long long arr[n];
    for (int i = 0;i < n;i++) {
        cin >> arr[i];
    }
    long long sum[n];
    sum[0] = arr[0];
    for (long long i = 1;i < n;i++){
        sum[i] = sum[i-1] + arr[i];
    }
 
    long long q;
    cin >> q;
    for (long long i = 0;i < q;i++) {
        long long s,e;
        
        long long a = sum[n-1];
        cin >> s >> e;
        long long temp = 0;
        if(s-2>=0){
            temp = sum[s-2];
        }
        a = sum[e-1] - temp;
        if(s==e){
            a = arr[s-1];
        }
        cout << a << "\n";
    }
    return 0;
}