Relocation

using System;

namespace bags
{
    class Program
    {
        static void Main(string[] args)
        {
            int width = int.Parse(Console.ReadLine());
            int length = int.Parse(Console.ReadLine());
            int height = int.Parse(Console.ReadLine());

            int volume = width * length * height;
            int sumVolumeBags = 0;
            int differenceVolume = 0;

            while (true)
            {
                string input = Console.ReadLine();
                if (input != "Done")
                {
                    int volumeBags = int.Parse(input);
                    sumVolumeBags += volumeBags;
                    differenceVolume = volume - sumVolumeBags;

                    if (differenceVolume < 0)
                    {
                        Console.WriteLine("No more free space! You " +
                            "need {0} Cubic meters more.",
                            Math.Abs(differenceVolume));
                        break;
                    }
                }
                else
                {
                    Console.WriteLine("{0} Cubic meters left.",
                        differenceVolume);
                    break;
                }
            }

        }
    }
}