#include<bits/stdc++.h>
using namespace std;
int a[100000];
int main()
{
	int n;
	cin>>n;
	for (int i = 1;i <= n;i++)
	{
		cin>>a[i];
	}
	int m;
	cin>>m;
	for (int i = 1;i <= m;i++)
    {
    	int l,r;
    	cin>>l>>r;
		int s = 0;
		for (int j = l;j <= r;j++)
		{
			s += a[j];
		}
		cout<<s<<endl;
    }
	return 0;

}