#include <iostream>
using namespace std;
typedef long long ll;
const int N = 1e6;
ll pfs[N + 5];
int n,q,l,r;
int main() {
cin >> n;
for (int i = 1;i <= n;i++) {
cin >> pfs[i];
pfs[i] += pfs[i-1];
}
cin >> q;
while (q--) {
cin >> l >> r;
cout << pfs[r] - pfs[l-1] << '\n';
}
}