using System;

public class Program

{

    public static void Main()

    {

        //Hugo Espino Luján

        int x;

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

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

        if(x==300){

        Console.WriteLine("Perfect score!");

        } else if(x>=200&& x<300){

        Console.WriteLine("Great score!");

        } else if(x>=100 && x<200){

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

        } else if(x<100){

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

        } else if(x>300){

        Console.WriteLine("That is imposible, please start again");

        }

    }

}