import java.util.*;

public class Main {
	static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		int n = sc.nextInt();
		String[] a = new String[n];
		String[] b = new String[n];
		for (int i=0; i<n; i++) {
			a[i] = sc.next();
		}
		for (int i=0; i<n; i++) {
			b[i] = sc.next();
			if (a[i].equals(b[i])==false) {
				System.out.println(i+1);
				System.out.println(a[i]);
				System.out.println(b[i]);
				break;
			}
		}
	}
}