#include <iostream>
#include <utility>
#include <vector>
using namespace std;
int main() {
	int n;
	cin >> n;
	vector<int> sum(n + 1);
	sum[0] = 0;
	for (int i = 1; i < n + 1; i++) {
		int tmp;
		cin >> tmp;
		sum[i] = sum[i - 1] + tmp;
	}
	int cnum;
	cin >> cnum;
	vector<pair<int, int>> check(cnum);
	for (int i = 0; i < cnum; i++) {
		cin >> check[i].first >> check[i].second;
	}
	for (int i = 0; i < cnum; i++) {
		cout << sum[check[i].second] - sum[check[i].first - 1] << endl;
	}
	return 0;
}