public class Animals {

    protected String name;

    protected String birthDate;



    public Animals(String name, String birthDate) {

        this.name = name;

        this.birthDate = birthDate;

    }

}



public class Pets extends Animals {

    protected List<String> commands;



    public Pets(String name, String birthDate) {

        super(name, birthDate);

        this.commands = new ArrayList<>();

    }



    public void addCommand(String command) {

        commands.add(command);

    }



    public List<String> getCommands() {

        return commands;

    }

}



public class PackAnimals extends Animals {

    public PackAnimals(String name, String birthDate) {

        super(name, birthDate);

    }

}

public class Dog extends Pets {

    public Dog(String name, String birthDate) {

        super(name, birthDate);

    }

}



public class Cat extends Pets {

    public Cat(String name, String birthDate) {

        super(name, birthDate);

    }

}



public class Hamster extends Pets {

    public Hamster(String name, String birthDate) {

        super(name, birthDate);

    }

}



public class Horse extends PackAnimals {

    public Horse(String name, String birthDate) {

        super(name, birthDate);

    }

}



public class Camel extends PackAnimals {

    public Camel(String name, String birthDate) {

        super(name, birthDate);

    }

}



public class Donkey extends PackAnimals {

    public Donkey(String name, String birthDate) {

        super(name, birthDate);

    }

public class Registry {

    private List<Animals> animals;



    public Registry() {

        animals = new ArrayList<>();

    }



    public void addAnimal(Animals animal) {

        animals.add(animal);

    }



    public List<String> getCommands(Animals animal) {

        if (animal instanceof Pets) {

            return ((Pets) animal).getCommands();

        }

        return null;

    }



    public void teachCommand(Pets pet, String command) {

        pet.addCommand(command);

    }



    public List<Animals> getAnimalsByBirthDate(String birthDate) {

        List<Animals> animalsByDate = new ArrayList<>();

        for (Animals animal : animals) {

            if (animal.birthDate.equals(birthDate)) {

                animalsByDate.add(animal);

            }

        }

        return animalsByDate;

    }

}

public class Main {

    public static void main(String[] args) {

        Registry registry = new Registry();

        Scanner scanner = new Scanner(System.in);



        while (true) {

            System.out.println("1. Add an animal");

            System.out.println("2. List commands of an animal");

            System.out.println("3. Teach a new command to a pet");

            System.out.println("4. List animals by birth date");

            System.out.println("5. Exit");

            System.out.print("Enter your choice: ");

            int choice = scanner.nextInt();



            scanner.nextLine(); // consume newline



            switch (choice) {

                case 1:

                    System.out.print("Enter animal type (dog/cat/hamster/horse/camel/donkey): ");

                    String animalType = scanner.nextLine();

                    System.out.print("Enter animal name: ");

                    String animalName = scanner.nextLine();

                    System.out.print("Enter birth date: ");

                    String birthDate = scanner.nextLine();



                    if (animalType.equalsIgnoreCase("dog")) {

                        registry.addAnimal(new Dog(animalName, birthDate));

                    } else if (animalType.equalsIgnoreCase("cat")) {

                        registry.addAnimal(new Cat(animalName, birthDate));

                    } else if (animalType.equalsIgnoreCase("hamster")) {

                        registry.addAnimal(new Hamster(animalName, birthDate));

                    } else if (animalType.equalsIgnoreCase("horse")) {

                        registry.addAnimal(new Horse(animalName, birthDate));

                    } else if (animalType.equalsIgnoreCase("camel")) {

                        registry.addAnimal(new Camel(animalName, birthDate));

                    } else if (animalType.equalsIgnoreCase("donkey")) {

                        registry.addAnimal(new Donkey(animalName, birthDate));

                    } else {

                        System.out.println("Invalid animal type");

                    }

                    break;

                case 2:

                    System.out.print("Enter animal name: ");

                    String animalName2 = scanner.nextLine();

                    // Find animal by name and list commands

                    break;

                case 3:

                    System.out.print("Enter pet name: ");

                    String petName = scanner.nextLine();

                    System.out.print("Enter new command to teach: ");

                    String newCommand = scanner.nextLine();

                    // Find pet by name and teach new command

                    break;

                case 4:

                    System.out.print("Enter birth date: ");

                    String birthDate2 = scanner.nextLine();

                    // List animals by birth date

                    break;

                case 5:

                    System.exit(0);

                    break;

                default:

                    System.out.println("Invalid choice");

            }

        }

    }

}