using ArrayList = System.Collections.ArrayList;
using Console   = System.Console;
using DateTime  = System.DateTime;
public class Test
{
   public static void Main()
   {
      ArrayList tArrayList = new ArrayList();
      
      tArrayList.Add("Hello world");
      string tNewstring = (string)tArrayList[0];
      Console.WriteLine(tNewstring);
      
      DateTime tDateTime = DateTime.Now;
      tArrayList.Add(tDateTime);
      DateTime tNewDateTime = (DateTime)tArrayList[1];
      Console.WriteLine(tNewDateTime);
      
      int tValue = 456;
      tArrayList.Add(tValue);
      int tNewValue = (int)tArrayList[2];
      Console.WriteLine(tNewValue);

   }
}