aa

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp3
{
    class Program
    {
        static void Main(string[] args)
        {
            int trainingDays = int.Parse(Console.ReadLine());
            int dancersCount = int.Parse(Console.ReadLine());
            int energyExpense = 0;
            for (int day = 1; day <= trainingDays; day++)
            {
                int hoursCount = int.Parse(Console.ReadLine());

                if (day % 2 == 0 && hoursCount % 2 == 0)
                {
                    energyExpense += dancersCount * 68;
                }
                else if (day % 2 != 0 && hoursCount % 2 == 0)
                {
                    energyExpense += dancersCount * 49;
                }
                else if (day % 2 == 0 && hoursCount % 2 != 0)
                {
                    energyExpense += dancersCount * 65;
                } else
                {
                    energyExpense += dancersCount * 30;
                }

            }

            int totalEnergy = 100 * dancersCount * trainingDays;
            totalEnergy = totalEnergy - energyExpense;

            double RemainingEnergyPerDancer = totalEnergy / dancersCount / (double)trainingDays;


            if (RemainingEnergyPerDancer >= 50.0)
            {
                Console.WriteLine($"They feel good! Energy left: {RemainingEnergyPerDancer:F2}");
            } else
            {
                Console.WriteLine($"They are wasted! Energy left: {RemainingEnergyPerDancer:F2}");
            }


        }
    }
}