Envío 4098

Código

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int size = scanner.nextInt();
        int[] sumA = new int[size];
        int sum = 0;
        for(int i = 0; i < size; i++) {
            int num = scanner.nextInt();
            sum += num;
            sumA[i] = sum;
        }
        
        int operations = scanner.nextInt();
        
        for(int i = 0; i < operations; i++) {
            int p1 = scanner.nextInt();
            int p2 = scanner.nextInt();
            if(p1 == 0) {
                System.out.println(sumA[p2]);
            }
            else {
                System.out.println(sumA[p2] - sumA[p1 - 1]);
            }
        }        
        scanner.close();
    }
}