using System;
using System.Linq;
namespace ConsoleApp168
{
    class Program
    {
        static void Main()
        {
            double grade = double.Parse(Console.ReadLine());
            PrintNumber(grade);
        }
        static void PrintNumber(double grade)
        {
            if(grade>=2.00&&grade<=2.99)
            {
                Console.WriteLine("Fail");
            }
            else if(grade>=3.00&&grade<=3.49)
            {
                Console.WriteLine("Poor");
            }
            else if(grade>=3.50&&grade<=4.49)
            {
                Console.WriteLine("Good");
            }
            else if(grade>=4.50&&grade<=5.49)
            {
                Console.WriteLine("Very good");
            }
            else if(grade>=5.50&&grade<=6.00)
            {
                Console.WriteLine("Excellent");
            }
        }

        }


    }