public class Atom
{
    public int Protons { get; set; }

    public int Electrons { get; set; }

	public Atom(int protons, int electrons)
	{
		Protons = protons;
		Electrons = electrons;
	}

}

public class Hydrogen : Atom
{
	public Hydrogen() : base("Atom") { }
}

public class Program
{
	public static void Main()
	{

	}
}