static void Main(string[] args)
{
Student s1 = new Student("Alex Kostenko");
Student s2 = new Student("Maria Veselkina");
Student s3 = new Student("Julia Prechrest");
Student s4 = new Student("Andriy Vorochinsky");
Student s5 = new Student("Vladyslav Machete");
s1.SetKnowledge(new Knowledge(20));
s2.SetKnowledge(new Knowledge(38));
s3.SetKnowledge(new Knowledge(54));
s4.SetKnowledge(new Knowledge(84));
s5.SetKnowledge(new Knowledge(46));
University university1 = new University("CH.U.I.");
university1.AddStudent(s1);
university1.AddStudent(s2);
university1.AddStudent(s3);
University university2 = new University("L.N.U");
university2.AddStudent(s4);
university2.AddStudent(s5);
Internship internship = new Internship("Interlink");
internship.ApplyStudent(s1);
internship.ApplyStudent(s2);
internship.ApplyStudent(s3);
internship.ApplyStudent(s4);
internship.ApplyStudent(s5);
Console.WriteLine("List of internship's students:");
Console.WriteLine(internship.GetStudents());
}