using System;

class App{
   public static void Main(String[] args){
      Object[] objects = new Object[]{ new Lemon(), new Grapefruit(), 
         new Truck(), new Lemon(), new Lime()};
      
      foreach(Object o in objects){
         Console.WriteLine(o.ToString());
      }
   }
}

class Citrus{
   public override String ToString(){
      return "I am a "+this.GetType().ToString();
   }
}

class Lime:Citrus{
}

class Lemon:Citrus{
}

class Grapefruit:Citrus{
}

class Truck{
   public override String ToString(){
      return "Truck here";
   }
}