#include<cstdio>
#include<iostream>
using namespace std;
int a[10001];
int main()
{
    freopen("sum.in","r",stdin);
    freopen("sum.out","w",stdout);
    int n;
    int m;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
            cin>>a[i];
    }
    int x,y;
    cin>>m;
    for(int i=1;i<=m;i++)
    {
            cin>>x>>y;
            int sum=0;
            for(int j=x;j<=y;j++)
            {
                 sum+=a[j];   
            }
            cout<<sum<<endl;
    }
    return 0;
}