%70AC

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

const int MAXN = 1e5 + 5;
vector<int> sum(MAXN, 0);

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

for (int i = 1; i <= n; ++i) {
    sum[i] = sum[i-1] + a[i-1];
}

cin >> q;
while (q--) {
    int l, r;
    cin >> l >> r;
    cout << sum[r] - sum[l-1] << endl;
}
return 0;

}