// https://dashoj.com/p/87
#include <bits/stdc++.h>

#define N 100010
using namespace std;
typedef long long ll;
ll n, k;
vector<int> ls(N, 0);
vector<int> qzh(N, 0);

int main() {
	ios::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> ls[i];
	for (int i = 1; i <= n; i++) qzh[i] = qzh[i - 1] + ls[i];
	cin >> k;
	while (k--) {
		int l, r;
		cin >> l >> r;
		cout << qzh[r] - qzh[l - 1] << endl;
	}
	return 0;
}