Java/com/study/demo/test3_5.java

package com.study.demo;

import java.util.Scanner;

public class test3_5 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int[] t = new int[n - 1];
        int[] s = new int[n];
        for (int i = 0; i < n - 1; i++) {
            t[i] = scanner.nextInt();
        }
        for (int i = 0; i < n; i++) {
            s[i] = scanner.nextInt();
        }
        int x = scanner.nextInt();
        int y = scanner.nextInt();

        int total = 0;
        if (x < y) {
            for (int i = x - 1; i < y - 1; i++) {
                total += s[i] + t[i];
            }
            total += s[y - 1];
        } else {
            for (int i = x - 1; i >= y; i--) {
                total += s[i] + (i > 0 ? t[i - 1] : 0);
            }
            total += s[y - 1];
        }
        System.out.println(total);
    }
}