using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(ParseTime("2324"));

    }

        static string ParseTime(string time)

        {

            if (int.TryParse(time.Substring(0, 2), out int hrs) && int.TryParse(time.Substring(2), out int min))

            {

                return new DateTime(2001, 1, 1, hrs, min, 0).ToString("hh:mm tt", CultureInfo.InvariantCulture);

            }

            // throw exception or return empty;

            return string.Empty;

        }

}