static void Main(string[] args)
        {
            var pers = new Person("Nikolaev E.I.", "34083540320423", new DateTime(
                                      1988, 12, 25));
            var stud = new Student("Nikolaev E.I.", "34083540320423", DateTime.Now,
                                   "INS-19-1", 2);
            var stud1 = new Student("NNNNNNNN I. R.",
                                    "24244",
                                    new DateTime(1988, 12, 23),
                                    "INS-19-1",
                                    2);
            var stud2 = new Student("Potapin E.I.", "340832423442", DateTime.Now,
                                    "INS-19-1", 2);
            var teach = new Teacher("Nikolaev E.I.", "34083540320423", DateTime.Now,
                                    "IST", 15);
            var teach1 = new Teacher("ttttttttt E.I.", "5656565", DateTime.Now,
                                     "IBAS", 10);

            Person[] all = { pers, stud, stud1, stud2, teach, teach1, pers };

/*            foreach (var human in all)
 *          {
 *              WriteLine(human.ToString());
 *          }*/

            IDrawable te = new Teacher(
                "ttttttttt E.I.",
                "5656565",
                DateTime.Now,
                "IBAS",
                10);

            Table t1 = new Table(), t2 = new Table();

            IDrawable[] ToDraw = { teach, stud2, t2, teach1, stud, te, t1 };

            /*            foreach (var item in ToDraw)
             *          {
             *              item.Draw();
             *          }*/

            System.Int32 x = 5, y = 111111111;

            x.Cube().Save("x.txt");
            y.Save("y.txt");
            pers.Save("pers.txt");

            WriteLine("OK");

            ReadKey();
        }