#include <iostream>
#include <cstdio>
#define int long long
using namespace std;

int n; 
int a[100000],s[1000000];

signed main()
{
 	cin.tie(0);
 	cout.tie(0);
	ios::sync_with_stdio(0);
	int n, m;
	cin >> n;
	for(int i = 1; i <= n; i++) cin >> a[i];
	cin >> m;
	while(m--)
	{
		int x, y;
		cin >> x >> y;
		for(int i = x; i <= y; i++)
			s[i] = s[i - 1] + a[i];
		cout << s[y] << "\n";
		for(int i = x; i <= y; i++) s[i] = 0;
	}
    return 0;
}