public override void Add(Root_system Root) { Roots.Add(Root); }
public override void Add(Root_system c) { Console.Write("not"); }
public abstract void Add(Root_system c);
public override void Add(Root_system Root) { Roots.Add(Root); }
public override void Add(Root_system c) { Console.Write("not"); }
public abstract void Add(Root_system c);