using System;

public class Program

{

    public static void Main()

    {

        int x;

        Console.WriteLine("x: ");

        x=Convert.ToInt16(Console.ReadLine());

        if((x>9)&&(x<100))

        {

            Console.WriteLine(x+" is 2-digits number");

        }

        else if((x>99)&&(x<1000))

        {

            Console.WriteLine(x+" is 3-digits number");

        }

        else

        {

            Console.WriteLine(x+" is neither a 2-digit nor a 3-digit number.");

        }

    }

}