import java.util.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception 
	{
		int n, m;
		int[] a, summ;
		Scanner in = new Scanner (System.in);
		n = in.nextInt();
		a = new int[n];
		for(int i = 0; i < n; i++){
			a[i] = in.nextInt();
		}
		summ = new int[n + 1];
		summ[0] = 0;
		for(int i = 1; i < n + 1; i++){
			summ[i] = summ[i - 1] + a[i - 1];
		}
		m = in.nextInt();
		for(int i = 0; i < m; i++){
			int l, r;
			l = in.nextInt();
			r = in.nextInt();
			System.out.println(summ[r] - summ[l - 1]);
		}
	}
}

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