#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	/*fstream cin("input.txt");
	ofstream cout("output.txt");*/
	long long n,k, a;
	cin >> n;
	vector<long long> sums;
	sums.push_back(0);
	for (int i = 0; i < n; i++) {
		cin >> a;
		sums.push_back(sums.back()+a);
	}
	cin >> k;
	long long l, r;
	for (int i = 0; i < k; i++) {
		cin >> l >> r;
		cout << sums[r] - sums[l-1] << endl;
	}
}