using System;

public class Program

{

    public static void Main()

    {

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

        if (v>90)

        {

           Console.WriteLine("need to pay");

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

            if (c>6)

                Console.WriteLine("need to take a lesson");

        }

        else

            Console.WriteLine("good");

    }

}