import java.io.*;
import java.util.*;
//import org.apache.commons.lang3.StringUtils;

public class HR_string {

    public static void main(String[] args) {

        Scanner sc=new Scanner(System.in);
        String A=sc.next();
        String B=sc.next();
        /* Enter your code here. Print output to STDOUT. */
        int sum_length = A.length() + B.length();
        System.out.println(sum_length);
        if(A.charAt(0) > B.charAt(0))
        {
            System.out.println("Yes");
        }
        else
        {
            System.out.println("No");
        }
        System.out.println((A.substring(0, 1).toUpperCase() + A.substring(1))+" "+(B.substring(0, 1).toUpperCase() + B.substring(1)));

    }
}