package net.ipipip0129.yukicoder.no547;

import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        //インプット
        Scanner scan = new Scanner(System.in);

        int wordCount = Integer.parseInt(scan.nextLine());
        List<String> list_A = Arrays.asList(scan.nextLine().split(" "));
        List<String> list_B = Arrays.asList(scan.nextLine().split(" "));

        for (int i = 0; i < wordCount; i++) {
            if (!list_A.get(i).equalsIgnoreCase(list_B.get(i))){
                System.out.println(i);
                System.out.println(list_A.get(i));
                System.out.println(list_B.get(i));
            }
        }
    }
}