using System;

public class Program

{

    public static void Main()

    {

        Calculate(396.6);

        Calculate(39.66);

        Calculate(3.16);  //Look at this number.

        Calculate(0.01);

    }

    public static int Calculate(double d)

    {

        var round = Math.Ceiling(d / 10);

        var result = d < 1 ? 

                (Math.Ceiling((d * 10)) / 10) :

                round < 10 

                    ? Math.Ceiling((d /10) * 10) 

                    : round * 10;

        var divTen = Math.Round(d / 10) * 10;

        Console.WriteLine(result);

        return 0;

    }

}