using System;

public class Program

{

    public static void Exc(double c)

    {

        if (c >= 5.50)

       {

        Console.WriteLine("Excellent!");

       }

       else if (c < 5.50)

      {

        Console.WriteLine("Not excellent.");

      }

​

    }

    public static void Main()

    {

        double n = double.Parse(Console.ReadLine());

        Exc(n);

    }

}