import java.util.*;

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