﻿using System;
class NumberToText
{
    static void Main(string[] args)
    {
        var number = int.Parse(Console.ReadLine());

        if (number == 1)
        {
            Console.WriteLine("one");
        }
        else if (number == 2)
        {
            Console.WriteLine("two");
        }
        else if (number == 3)
        {
            Console.WriteLine("three");
        }
        else if (number == 4)
        {
            Console.WriteLine("four");
        }

        else
        {
            Console.WriteLine("number too big");
        }
    }
}