import java.io.; import java.util.;

public class Solution {

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 length = A.length()+B.length();
System.out.println(length);
if(A.compareTo(B)>0){
   System.out.println("Yes");
}
else{
    System.out.println("No");
}
String capitalA = A.substring(0,1).toUpperCase()+A.substring(1);
String capitalB = B.substring(0,1).toUpperCase()+B.substring(1);
System.out.println(capitalA + " " + capitalB);
sc.close();
}

}