using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        string[] formats= {"MM/dd/yyyy hh:mm:ss tt", "MM/dd/yyyy hh:mm tt"};

        Console.WriteLine(DateTime.ParseExact("05/01/2009 06:32 PM", formats, null, DateTimeStyles.None));

    }

}