using System;

public class Program

{

    public static void Main()

    {

        //Melissa Yamilet 

        int x;

        Console.WriteLine("Welcome to bowling alley");

        Console.WriteLine("Tell me your score");

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

        if (x == 300)

        {

        Console.WriteLine("Perfect score!");    

        }

        else if (x > 300)

        {

        Console.WriteLine("Great Score!");

        }

        else if (x <100)

        {

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

        }

    }

}