using System;

public class MyLinkedList[T] {
  protected  mutable  first : Node;

  protected class Node
  {
    public  mutable  item : T;

    public this (mutable  item : T)
    {
      this.item = item; 
    }
  }
}

class SortedList[U] : MyLinkedList[U]
{
  public Insert (_ : U) :  void { 
    mutable  _node = first;
                ();
  }
}

class X {
  static Main () :  void
  { }
}

/*
BEGIN-OUTPUT
END-OUTPUT
*/