using System;

namespace _10.Moving
{
    class Moving
    {
        static void Main(string[] args)
        {
            int w = int.Parse(Console.ReadLine());
            int l = int.Parse(Console.ReadLine());
            int h = int.Parse(Console.ReadLine());

            string command = Console.ReadLine();

            int space = w * l * h;

            int volume = 0;

            while (command != "Done")
            {
                int commandNum = int.Parse(command);
                volume += commandNum;

                if (volume >= space)
                {
                    Console.WriteLine($"No more free space! You need {volume - space} Cubic meters more.");
                    break;
                }

                command = Console.ReadLine();
            }

            if (volume < space)
            {
                Console.WriteLine($"{space - volume} Cubic meters left.");
            }

        }
    }
}