static void Main(string[] args)
{
Person one = new Teacher();
Teacher two = new Teacher("ivan", "petkanov", 21, "biologiq");
Console.WriteLine(two);
Console.WriteLine(one.SayGoodDay());
Console.WriteLine(two.SayGoodEvening());
Console.WriteLine(one.Homework());
Lecture three = new Lecture();
Lecture four = new Lecture("ivana", "petkanova", 2, "TU");
Console.WriteLine(three);
Console.WriteLine(three.Homework());
Console.WriteLine(four.SayGoodDay());
four.Uprajnenie("monday");
four.Uprajnenie("monday", 4);
four.Uprajnenie("monday", 4,2130);
Professor five=new Professor("kremena", "ivanova", 28, "TU","profesor");
Console.WriteLine(five);
Console.WriteLine(five.Homework());
five.ProfessorInfo();
five.ProvejdaIzpiti();
Assistant six=new Assistant("ivailo", "petkanova", 1, "TU",true);
Console.WriteLine(six);
Console.WriteLine(six.Homework());
six.IsGlavenAsistent();
six.ProverqvaIzpiti();
six.WriteArticles();
List<string> example=new List<string>(5);
example.Add("1a");
example.Add("5e");
example.Add("2v");
SchoolTeacher seven = new SchoolTeacher("velichka", "stoeva", 4, "matematika", example);
seven.Classes(example);
seven.HaveFun();
Console.WriteLine(seven.Homework());
CollegeTeacher eight = new CollegeTeacher("djon", "atanasov", 16, "programirane", "sofiiski universitet ");
Console.WriteLine(eight);
Console.WriteLine(eight.Homework());
Console.WriteLine(Person.count);
}