using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(CeilToNextSameDecimal(396.6));

        Console.WriteLine(CeilToNextSameDecimal(39.66));

        Console.WriteLine(CeilToNextSameDecimal(3.966));

        Console.WriteLine(CeilToNextSameDecimal(0.3966));

    }

    public static double CeilToNextSameDecimal(double number)

    {

        int decimalPlaces = BitConverter.GetBytes(decimal.GetBits((decimal)number)[3])[2];

        double factor = Math.Pow(10, decimalPlaces);

        return Math.Ceiling(number * factor) / factor;

    }

}