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();
        
        sc.close();
        
        System.out.println(A.length() + B.length());
        System.out.println((A.compareTo(B) > 0) ? "Yes" : "No");
        System.out.println(A.substring(0, 1).toUpperCase() + A.substring(1) + " " + 
            B.substring(0, 1).toUpperCase() + B.substring(1));
    }
}