using System;

public class Program

{

    public static void Main()

    {

        int num;

        Console.WriteLine("Hello World");

        num = Int32.Parse(Console.ReadLine());

        for (int i = 1; i <= 9; i++)

        {   

        switch (i){

            case 1: Console.WriteLine("Uno"); break;    

            case 2: Console.WriteLine("Dos"); break;    

            case 3: Console.WriteLine("Tres"); break;   

            case 4: Console.WriteLine("Cuatro"); break; 

            case 5: Console.WriteLine("Cinco"); break;  

            case 6: Console.WriteLine("Seis"); break;

            case 7: Console.WriteLine("Siete"); break;

            case 8: Console.WriteLine("Ocho"); break;

            case 9: Console.WriteLine("Nueve"); break;;

            default: Console.WriteLine(""); break;} 

        for (int t = 0; t <= 90; t += 10)

            switch (t){

            case 10: Console.WriteLine("diez"); break;  

            case 20: Console.WriteLine("veinte"); break;    

            case 30: Console.WriteLine("treinta"); break;   

            case 40: Console.WriteLine("Cuarenta"); break;  

            case 50: Console.WriteLine("Cincuenta"); break; 

            case 60: Console.WriteLine("Sesenta"); break;

            case 70: Console.WriteLine("Setenta"); break;

            case 80: Console.WriteLine("Ochenta"); break;

            case 90: Console.WriteLine("Noventa"); break;

            default: Console.WriteLine("cien"); break;} 

        }   

    }

}