Envío 4065

Código

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int[] a = new int[n];
        for (int i = 0; i < n; i++) {
            a[i] = scanner.nextInt();
        }
        int[] s = new int[n];
        int sum = 0;
        for (int i = 0; i < n; i++) {
            sum += a[i];
            s[i] = sum;
        }
        int c = scanner.nextInt();
        for (int k = 0; k < c; k++) {
            int p = scanner.nextInt();
            int q = scanner.nextInt();
            solve(s, p, q);
        }
    }

    private static void solve(int[] s, int p, int q) {
        int sum = s[q];
        if (p - 1 >= 0) {
            sum -= s[p - 1];
        }
        System.out.println(sum);
    }
}