import java.util.*;

public class test{

public static void main(String[] args){

Scanner sc = new Scanner(System.in);

String a = sc.next();

String b = sc.next();

System.out.println(a.length()+b.length());

if(a.compareTo(b)>0){

System.out.println("Yes");

}

else{

System.out.println("No");

}

String a1 = Character.toString(a.charAt(0));

String b1 = Character.toString(b.charAt(0));

String s1 = a1.toUpperCase()+a.substring(1);

String s2 = b1.toUpperCase()+b.substring(1);

System.out.println(s1+" "+s2);

}

}