/// <summary>
        /// The main entry point for the application.
        /// </summary>
        static void Main(string[] args)
        {
            VzwCostOptimization costOpt = new VzwCostOptimization();

            if (File.Exists(Directory.GetCurrentDirectory() + "\\plan.xml"))
            {
                costOpt.LoadPlanInformation(Directory.GetCurrentDirectory() + "\\plan.xml");
            }
            else
            {
                costOpt.CreateTable();
            }

            costOpt.ReadFile(Settings.Default.FilePath);
            var optimalPlan = costOpt.SearchPlans(Settings.Default.FilePath);

            try
            {
                costOpt.UpdateFile(Settings.Default.FilePath, optimalPlan);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            Console.WriteLine("Done...");
            Console.ReadKey();
        }