#include <bits/stdc++.h>
using namespace std;

long long a[10010], sum[200010], s[10010];

int main() {
	freopen("sum.in", "r", stdin);
	freopen("sum.out", "w", stdout);
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
		s[i] = s[i - 1] + a[i];
	}
	int m;
	cin >> m;
	for (int i = 1; i <= m; i++) {
		int l, r;
		cin >> l >> r;
		sum[i] = s[r] - s[l - 1];
	}
	for (int i = 1; i <= m; i++) {
		cout << sum[i] << endl;
	}
	return 0;
}