/*
 * * Write a program that converts a number in the range [0...999] to a text corresponding to its English pronunciation. Examples:
    0  "Zero"
    273  "Two hundred seventy three"
    400  "Four hundred"
    501  "Five hundred and one"
    711  "Seven hundred and eleven"
*/

using System;


class NumbersNames
{
    static void Main()
    {
        string[] digits = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };
        string[] special = { "ten", "eleven", "twelve", "thirdtheen", "fourthen", "fifteen", "sixteen", "seventheen", "eightheen", "ninetheen" };
        string[] dec = { "", "", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" };
        int num = 0;
        Console.WriteLine("Please write down number between 0 and 999");
        bool validity = int.TryParse(Console.ReadLine(), out num);
        if (validity && num >= 0 && num < 1000)
        {
            if (num >= 100)
            {
                int c = (num % 10);
                int b = (num / 10) % 10;
                int a = (num / 100) % 10;
                if (((b * 10 + c) < 20) && ((b*10 + c) >= 10))
                {
                    Console.WriteLine("{0} hundred and {1}",digits[a],special[c]);
                }
                if (b == 0 && c > 0)
                {
                    Console.WriteLine("{0} hundred and {1}", digits[a], digits[c]);
                }
                if ((b * 10 + c) >= 20)
                {
                    Console.WriteLine("{0} hundred and {1} {2}", digits[a], dec[b], digits[c]);
                }
                if ((b * 10 + c) == 0)
                {
                    Console.WriteLine("{0} hundred", digits[a]);
                }
            }
            else
            {
                if (num > 10)
                {
                    int c = (num % 10);
                    int b = (num / 10) % 10;
                    if (((b * 10 + c) < 20) && ((b * 10 + c) >= 10))
                    {
                        Console.WriteLine("{0}", special[c]);
                    }
                    if ((b * 10 + c) > 20)
                    {
                        Console.WriteLine("{0} {1} ", dec[b], digits[c]);
                    }
                }
                else
                {
                    int c = (num % 10);
                    Console.WriteLine("{0}", digits[c]);
                }
            }
        }

    }
}