#include<iostream>
#include<cstdio>
using namespace std;
const int N = 1e6 + 10;
int a[N];
long long S[N];
int main()
{
int n,m;
scanf("%d", &n);
for(int i = 1; i <= n; i++)
{
scanf("%d",&a[i]);
S[i] = S[i-1] + a[i];
}
scanf("%d", &m);
while(m --)
{
int l, r;
scanf("%d%d",&l, &r);
cout << S[r] - S[l-1] << endl;
}
return 0;
}