sing System;

namespace Assignment_1A
{
    class Program
    {
        static void Main(string[] args)
        {
            Animal lastAnimal = null;
            string input;
            while ((input = Console.ReadLine()) != "exit")
            {
                if (input == "animal")
                {
                    var animal = new Animal("animal", 4);
                    Console.WriteLine(animal.nameAnimal());
                    lastAnimal = animal;
                    Console.WriteLine();
                }
                else if (input == "dog")
                {
                    var dog = new Dog("Dog",4);
                    Console.WriteLine(dog.nameAnimal() + " " + dog.legsAnimal());
                    Console.WriteLine(dog.Doglike());
                    lastAnimal = dog;
                    Console.WriteLine();


                }
                else if (input == "fish")
                {
                    var fish = new Fish("fish",0);
                    Console.WriteLine(fish.nameAnimal()+ " "+ fish.legsAnimal());
                    Console.WriteLine(fish.fishlike());
                    lastAnimal = fish;
                    Console.WriteLine();

                }
                else if (input == "shark")
                {
                    var shark = new Shark("shark", 0);
                    Console.WriteLine(shark.nameAnimal() + " " + shark.legsAnimal());
                    Console.WriteLine(shark.Sharklike());
                    Console.WriteLine(shark.Eat()+" "+lastAnimal.Name);
                    Console.WriteLine();

                }
            }
        }

    class Animal
    {

            public string Name { get; set; }
            public int Legs { get; set; }

            public Animal(string Name, int Legs)
            {
                this.Name = Name;
                this.Legs = Legs;
            }

            public virtual string nameAnimal()
            {
                return "animal";
            }
            public virtual string legsAnimal()
            {
                return "";
            }



        }
    class Dog : Animal
    {
            public Dog(string name, int Legs) : base(name,  Legs)
            {
            }
            public override string nameAnimal()
            {
                return "Dog";
            }
            public override string legsAnimal()
            {
                return "4";
            }
            public string Doglike()
            {
                return "Woof";
            }
        }
    class Fish : Dog
    {
            public Fish(string name, int Legs) : base(name, Legs)
            {
            }
            public override string nameAnimal()
            {
                return "Fish";
            }
            public override string legsAnimal()
            {
                return "0";
            }
            public string fishlike()
            {
                return "Just keep swimming";
            }

        }
    class Shark : Fish
    {
            public Shark(string name, int Legs) : base(name, Legs)
            {
            }
            public override string nameAnimal()
            {
                return "Shark";
            }
            public override string legsAnimal()
            {
                return "0";
            }
            public string Sharklike()
            {
                return "Just keep swimming";
            }
            public string Eat()
            {
                return "sharks ate" ;

            }
         
    }
    }
}