#include<bits/stdc++.h>
using namespace std;
int n,m,nums[1005],a,b,sum;

int main()
{
	scanf("%d",&n);
	for(int i = 1;i <= n;i++)
	{
		scanf("%d",&nums[i]);
		
	}
	scanf("%d",&m);
	for(int i = 1;i <= m;i++)
	{
		scanf("%d %d",&a,&b);
		for(int j = a;j <= b;j++)
		{
			sum += nums[j];
		}
		
		printf("%d\n",sum);
        sum = 0;

		
	}
	
	return 0;
	
}