using System;

public interface IList[R]
{
   Map[S] ( item : S) : int;
}

public class List[T] : IList[T]
{
  public Map[U] ( _item : U) :  int
  {
     1;
  }
}

public class SpecialList[V] : IList[V]
{
  public Map[W] ( _item : W) :  int
  {
     2;
  }
}

class X
{
  static Main () :  int
  {
    mutable  list_ =  List ();
    mutable  result = list_.Map ("Hello");
    if (result != 1)
    {
       1;
    }
    else
  {

    mutable  list2 =  SpecialList ();
    mutable  result2 = list2.Map ("World");
    if (result2 != 2)
    {
       2;
    }
    else
  {

     0;
  }
  }
  }
}
/*
BEGIN-OUTPUT
END-OUTPUT
*/