static void Main(string[] args)
{
University university = new University("CH.U.I.");
Student student1 = new Student("Andrew");
Student student2 = new Student("Julia");
Student student3 = new Student("Maria");
Student student4 = new Student("Anton");
Student student5 = new Student("Dmitry");
Student student6 = new Student("Vladislav");
Student student7 = new Student("Olexandr");
Student student8 = new Student("Nataliya");
Student student9 = new Student("Yevgeniy");
student1.SetKnowledgeLevel(35);
student2.SetKnowledgeLevel(3);
student3.SetKnowledgeLevel(99);
student4.SetKnowledgeLevel(86);
student5.SetKnowledgeLevel(12);
student6.SetKnowledgeLevel(58);
student7.SetKnowledgeLevel(32);
student8.SetKnowledgeLevel(81);
student9.SetKnowledgeLevel(70);
university.AddStudent(student1);
university.AddStudent(student2);
university.AddStudent(student3);
university.AddStudent(student4);
university.AddStudent(student5);
university.AddStudent(student6);
university.AddStudent(student7);
university.AddStudent(student8);
university.AddStudent(student9);
Internship internship = new Internship("Interlink");
internship.AddAllStudents_FromUniversity(university);
Console.WriteLine(university.GetMidlKnowledgeStr());
Console.WriteLine("////////////////////////////////");
Console.WriteLine("List of internship's students:");
Console.WriteLine(internship.GetStudentsStr());
Console.WriteLine("////////////////////////////////");
Console.WriteLine($"List of {university.GetName()} students:");
Console.WriteLine(university.GetStudentsStr());
}