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

public class Solution { public static String capitalize(String str){ StringBuilder capitalize = new StringBuilder(); char firstChar = str.charAt(0); capitalize.append(Character.toTitleCase(firstChar)).append(str.substring(1)); return capitalize.toString(); }

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());
    if(A.charAt(0)>B.charAt(0)) System.out.println("Yes");
    else System.out.println("No");
    System.out.println(capitalize(A) + " " + capitalize(B));
}

}