using System;

class DigitasWord
{
    static void Main()
    {

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

        switch (d)
        {
            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;
        }
    }

}