import java.io.*;
import java.util.*;
//import org.apache.commons.lang3.StringUtils;
public class HR_string {
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 sum_length = A.length() + B.length();
System.out.println(sum_length);
if(A.charAt(0) > B.charAt(0))
{
System.out.println("Yes");
}
else
{
System.out.println("No");
}
System.out.println((A.substring(0, 1).toUpperCase() + A.substring(1))+" "+(B.substring(0, 1).toUpperCase() + B.substring(1)));
}
}