using System;

public class Program

{

    static string who = "class";

​

    static void F()

    {

      string who = "F";

    }

​

    static void G()

    {

      F();

      Console.WriteLine(who);

    }

​

    static void H()

    {

      string who = "H";

      F();

      Console.Write(who);

    }

    public static void Main()

    {

        H();

    }

}