import java.util.*;
import java.lang.*;

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc = new Scanner(System.in);
		int size = sc.nextInt();
		
		
		int[] arr = new int[size];
		for (int i = 0; i < size; i++) {
			arr[i] = sc.nextInt();
		}
		
		int[] prefixSum = new int[size];
		if (size > 0) {
			prefixSum[0] = arr[0];
			for (int i = 1; i < size; i++) {
				prefixSum[i] = prefixSum[i - 1] + arr[i];
			}
		}
		
		int q = sc.nextInt();
		
		for(int i = 0;i<q;i++){
			int left = sc.nextInt();
			int right = sc.nextInt();
			
			int sum = (left == 0) ? prefixSum[right] : prefixSum[right] - prefixSum[left - 1];
			
			System.out.println(sum);
		}
	}
}