static void Main(string[] args)
{
Yard yard = new Yard();
Dog kekso = new Dog();
Dog riusa = new Dog();
Koi zlty = new Koi();
Koi cerveny = new Koi();
Koi biely = new Koi();
yard.Add(kekso);
yard.Add(riusa);
yard.Add(zlty);
yard.Add(cerveny);
yard.Add(biely); /* malo by zhucat na chybe, ze 5-ho do pola animal uz neumiestni*/
yard.Remove(cerveny); /* malo by odobrat cerveneho z animal pola */
yard.Add(biely); /* malo by pridat bieleho do pola animal */
}