using System;

public class DigitAsWord

{

    public static void Main()

    {

        int digit = int.Parse(Console.ReadLine());

        switch(digit)

        {

            case 0: 

                Console.WriteLine("zero"); break;

            case 1:

                Console.WriteLine("one"); break;

            case 2:

                Console.WriteLine("two"); break;

            case 3: 

                Console.WriteLine("three"); break;

            case 4:

                Console.WriteLine("four"); break;

            case 5:

                Console.WriteLine("five"); break;

            case 6:

                Console.WriteLine("six"); break;

            case 7:

                Console.WriteLine("seven"); break;

            case 8:

                Console.WriteLine("eight"); break;

            case 9:

                Console.WriteLine("nine"); break;

            default:

                Console.WriteLine("not a digit"); break;

        }

    }

}