#include<stdio.h>
#include<iostream>
using namespace std;
#define maxn 100005
long long a[maxn],tot;
void sum(int m,int n)
{
	tot=0;
	int i;
	for(i=m;i<=n;i++)
	{
		tot=tot+a[i];
	}
	cout<<tot<<endl;
}
int main()
{
	int i,n,m,q,p;
	freopen("sum.in","r",stdin);
	freopen("sum.out","w",stdout);
	scanf("%d",&n);
	for(i=1;i<=n;i++)
	{
		scanf("%lld",&a[i]);
	}
	scanf("%d",&m);
	for(i=1;i<=m;i++)
	{
		scanf("%d %d",&q,&p);
		sum(q,p);
	}
	return 0;
}