# include <bits/stdc++.h>
using namespace std;

# define int long long

main (void){
	
	int n;
	
	scanf ("%d", &n);
	
	int arr[10005] = {0};
	
	for (int i = 0;i < n;i++){
		scanf ("%d", &arr[i]);
	}
	
	int m;
	
	scanf ("%d", &m);
	
	int brr[10005][2];
	int sum[10005] = {0};
	
	for (int i = 0;i < m;i++){
		scanf ("%d %d", &brr[i][0], &brr[i][1]);
		
		for (int j = brr[i][0] - 1;j < brr[i][1];j++){
			sum[i] = sum[i] + arr[j];
		}
	}
	
	for (int i = 0;i < m;i++){
		printf ("%d\n", sum[i]);
	}
	
	return 0;
}