mport 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. */
            //1
    System.out.println(A.length()+B.length());
    //2
    if (A.compareTo(B) > 0) {
        System.out.println("Yes");
    } else {
        System.out.println("No");
    }

    //3
    System.out.println(A.replace(A.charAt(0), A.toUpperCase().charAt(0))  +" "+B.replace(B.charAt(0), B.toUpperCase().charAt(0)));

}

}