#include<bits/stdc++.h>
using namespace std;
int n,m,s[1000100],k[1000100],l[1000100],z[1000100],x=1; 
int main()
{
    cin>>n;
    for(int i=1;i<=n;i++) 
    {	
	    cin>>s[i];
	    l[i]=l[i-1]+s[i];
    }
    cin>>m;
    n=1;
    for(int i=1;i<=m;i++) 
    {
        cin>>k[n]>>k[n+1];
        n=n+2;
    }
    for(int i=1;i<=m*2;i+=2)
    {
	z[i]=l[k[i+1]]-l[k[i]-1]; 
	cout<<z[i]<<endl;
    }
}