Envío 3787

Código

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int arr[] = new int[n];
		for (int i = 0; i < n; i++) {
			arr[i] = sc.nextInt();
		}
		int c = sc.nextInt();

		for (int i = 0; i < c; i++) {
			int j = sc.nextInt();
			int k = sc.nextInt();
			System.out.println(Sum(j, k, arr));
		}
		sc.close();

	}

	public static int Sum(int j, int k, int[] arr) {
		int total = 0;
		for (int i = j; i <= k; i++) {
			total = total + arr[i];
		}
		return total;
	}

}