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. */
    System.out.println(A.length()+B.length());
    if(A.compareTo(B)>0)
       System.out.println("Yes");
    else
         System.out.println("No");
    A= Character.toUpperCase(A.charAt(0))+A.substring(1);
    B=Character.toUpperCase(B.charAt(0))+B.substring(1);
       System.out.println(A+" "+B);
}

}