using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Console.WriteLine(NumberToWords(10456));

    }

    public static string NumberToWords(int number)

    {

        if (number == 0)

            return "Zero";

​

        if (number < 0)

            return "Minus " + NumberToWords(Math.Abs(number));

​

        string words = "";

​

        if ((number / 1000000) > 0)

        {

            words += NumberToWords(number / 1000000) + " Million ";

            number %= 1000000;

        }

​

        if ((number / 1000) > 0)

        {

            words += NumberToWords(number / 1000) + " Thousand ";

            number %= 1000;

        }

​

        if ((number / 100) > 0)

        {

            words += NumberToWords(number / 100) + " Hundred ";

            number %= 100;

        }

​

        if (number > 0)

        {

            if (words != "")

                words += "and ";

​

            var unitsMap = new[] { "Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" };

            var tensMap = new[] { "zero", "Ten", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" };

​

            if (number < 20)

                words += unitsMap[number];

            else

            {

                words += tensMap[number / 10];

                if ((number % 10) > 0)

                    words += "-" + unitsMap[number % 10];

            }

        }

​

        return words;

    }

}