D286 - 3.26

import java.util.Scanner;

public class NameFormat {
    public static void main(String[] args){
        Scanner scnr = new Scanner(System.in);
        String firstName, middleName, lastName;

        firstName = scnr.next();
        middleName = scnr.next();
        lastName = scnr.nextLine();

        if (lastName.equals("")){
            System.out.println(middleName + ", " + firstName.charAt(0) + ".");
        } else {
            lastName = lastName.substring(1);
            System.out.println(lastName + ", " + firstName.charAt(0) + "." + middleName.charAt(0) + ".");
        }

        scnr.close();
    }
}