using System;

namespace Zhani
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            int windhtSpace = int.Parse(Console.ReadLine());
            int lenghtSpace = int.Parse(Console.ReadLine());
            int heightSpace = int.Parse(Console.ReadLine());


            int totalSpace = windhtSpace * lenghtSpace * heightSpace;
            int sum = 0;
            string command = Console.ReadLine();

            while (command != "Done")
            {
                int cartons = int.Parse(command);
                sum += cartons;
                if (totalSpace < sum)
                {
                    double needs = sum - totalSpace;
                    Console.WriteLine($"No more free space! You need {needs} Cubic meters more.");
                    break;
                }
                command = Console.ReadLine();
            }

            if (command == "Done")
            {
                double lefts = totalSpace - sum;
                Console.WriteLine($"{lefts} Cubic meters left.");
            }
        }
    }
}