using System;

namespace OwnBussiness
{
    class Program
    {
        static void Main()
        {
            int width = int.Parse(Console.ReadLine());
            int lenght = int.Parse(Console.ReadLine());
            int height = int.Parse(Console.ReadLine());

            string input = Console.ReadLine();

            int leeway = 0;
            int occupied = 0;
            int space = 0;

            while (input != "Done")
            {
                int compcount = int.Parse(input);
                occupied += compcount;
                leeway = width * lenght * height;

                if (occupied > leeway)
                {
                    space = Math.Abs(occupied - leeway);
                    Console.WriteLine($"No more free space! You need {space} Cubic meters more.");
                    break;
                }
                input = Console.ReadLine();
            }

            if (leeway > occupied)
            {
                space = leeway - occupied;
                Console.WriteLine($"{space} Cubic meters left.");
            }

        }
    }
}