using System;

public class Program

{

    public static void Main()

    {

        //Luis Eduardo Arellano

        int num1;

        Console.WriteLine("Please give me your bowling score");

        num1 = int.Parse(Console.ReadLine());

        if (num1 == 300 )

        {

            Console.WriteLine( "Perfect score!");

        }

        else if (num1 >= 200 )

        {

            Console.WriteLine("Great score!");

        }

        else if ( num1 >= 100 )

        {

            Console.WriteLine("Good, you can do better!");

        }                     

        else if ( num1 < 100 )

        {

            Console.WriteLine("Sorry, you are not good at bowling.");

        }                     

        else if ( num1 > 300 )

        {

            Console.WriteLine("That’s impossible, please start again.");

        }                       

    }

}