import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();

        String[] s = new String[n];
        String[] t = new String[n];
        for(int i=0; i<n; i++) {
            s[i] = in.next();
        }
        for(int i=0; i<n; i++) {
            t[i] = in.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;
            }
        }
    }
}