using System;

public class Program

{

    public static void Main()

    {

        int width = int.Parse(Console.ReadLine());

        int length = int.Parse(Console.ReadLine());

        int height = int.Parse(Console.ReadLine());

        int cubics = width*length*height;

        int totalSpace = 0;

        int spaceDiff = 0;

        string command = Console.ReadLine();

        while(command != "Done")

        {

            int boxCubic = int.Parse(Console.ReadLine());

            totalSpace += boxCubic;

            spaceDiff = Math.Abs(totalSpace - cubics);

            if(totalSpace >= cubics)

            {

                Console.WriteLine($"No more free space! You need {spaceDiff} Cubic meters more.");

                break;

            }

            command = Console.ReadLine();

        }

        if(command == "Done")

        {

            Console.WriteLine($"{spaceDiff} Cubic meters left.");

        }

    }

}