using System;

namespace Moving2
{
    class Program
    {
        static void Main(string[] args)
        {
            double weight = double.Parse(Console.ReadLine());
            double lenght = double.Parse(Console.ReadLine());
            double height = double.Parse(Console.ReadLine());

            double roomVolume = weight * lenght * height;
            string command = Console.ReadLine();
            bool isThereEnoughSpace = true;

            while (command != "Done")
            {
                double boxes = double.Parse(command);
                roomVolume -= boxes;

                if (roomVolume < 0)
                {
                    isThereEnoughSpace = false;
                    break;

                }
                command = Console.ReadLine();


            }
            if (isThereEnoughSpace)
            {
                Console.WriteLine($"{roomVolume} Cubic meters left.");
            }
            else
            {
                Console.WriteLine($"No more free space! You need {Math.Abs(roomVolume)} Cubic meters more.");
            }





        }
    }
}