#include<bits/stdc++.h>
using namespace std;
int a[1000100], s[1000100];
int main(){
int n, q, l, r;
cin >> n;
for(int i = 1; i <= n; ++i){
scanf("%d", &a[i]);
s[i] = s[i - 1] + a[i];
}
cin >> q;
while(q --){
scanf("%d%d", &l, &r);
cout << s[r] - s[l - 1] << endl;
}
return 0;
}