using System;

public class Program
{
    public static void Main()
    {
        string num = Console.ReadLine();
        char lastDigit = num[num.Length - 1];
        PrintLastDigit(lastDigit);
    }

    static void PrintLastDigit(char lastDigit)
    {
        switch (lastDigit)
        {
            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;
            case '0':
                Console.WriteLine("zero");
                break;
        }
    }
}