using System;

namespace ConsoleApplication1
{
     abstract class Person
     {
          abstract public void ShowInfo();
     }

     class Student : Person
     {
          public String UniversityName { get; set; }
          override public void ShowInfo()
          {
               Console.WriteLine("Student, study in " + UniversityName);
          }
     }

     class Developer : Person
     {
          public String CompanyName { get; set; }
          override public void ShowInfo()
          {
               Console.WriteLine("Developer, work in " + CompanyName);
          }
     }

     class Program
     {
          static void Main(string[] args)
          {
          }
     }
}