using System;

using System.Collections.Generic;

using System.Globalization;

using System.Linq;

public class Program

{

    private static string round(decimal value)

    {

        var r = value.ToString(@"#.##", CultureInfo.InvariantCulture);

        return r.EndsWith(@".00") ? ((int)value).ToString(CultureInfo.InvariantCulture) : r;

    }

    public static void Main()

    {

        Console.WriteLine(round(10m));

        Console.WriteLine(round(10.5m));

        Console.WriteLine(round(0m));

    }

}