using System;

namespace NumberAsWords
{
	class Program
	{
		static void Main(string[] args)
		{
			int number = int.Parse(Console.ReadLine());
			string [] toNineteen = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven",
				"twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
			string [] tensNumbers = {"zero","ten","twenty", "thirty", "fourty", "fifty", "sixty", "seventy", "eighty", "ninety" };
			string word = "";

			if (number == 100) {
				Console.WriteLine ("one hundred");
			}
			else if (number >= 0 && number <= 100) //<=999 - ще показва думите и на тези числа
			{

				if (number / 100 > 0)
				{
					word = toNineteen[number / 100] + " " + "hundred";
					number = number % 100;
				}

				if (word != "" )
				{
					word = word + " " + "and ";
				}
				if (number < 20)
				{
					word = word + toNineteen[number];
				}
				else if (number / 10 > 1)
				{
					word = word + tensNumbers[number / 10];
					if (number % 10 > 0)
					{
						word = word + " " + toNineteen[number % 10];
					}
				}
			}
			else
			{
				Console.WriteLine("invalid number");

			}
			Console.WriteLine(word);
		}
	}
}