static void Main() { Disciplines History = new Disciplines("History", 5, 5); Disciplines English = new Disciplines("English", 10, 4); Disciplines Math = new Disciplines("Math", 11, 3); Disciplines Biology = new Disciplines("Biology", 3, 5); Teachers penka = new Teachers("Penka"); penka.disciplines.Add(History); penka.disciplines.Add(Math); Teachers dzurla = new Teachers("Dzurla"); dzurla.disciplines.Add(Biology); dzurla.disciplines.Add(English); Teachers valq = new Teachers("Valq"); valq.disciplines.Add(History); valq.disciplines.Add(English); Classes classA = new Classes("A"); classA.teachers.Add(penka); classA.teachers.Add(valq); classA.students.Add(new Students("Pesho Iliev", "2345")); classA.students.Add(new Students("Gosho Chumata", "13")); classA.students.Add(new Students("Dzurlio Dzurlev", "412")); classA.students.Add(new Students("Ganka Shikerova", "4124")); classA.students.Add(new Students("Petur Petrov", "4124")); Console.WriteLine(classA.ToString()); }