static void Main(string[] args)
        {
            int eggs = int.Parse(Console.ReadLine());
            int eggsSold = 0;

            while(true)
            {
                string command = Console.ReadLine();

                if (command == "Close")
                {
                    Console.WriteLine("Store is closed!");
                    Console.WriteLine($"{eggsSold} eggs sold.");
                    break;
                }

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

                if (command == "Buy")
                {
                    if (eggs < moreEggs)
                    {
                        Console.WriteLine("Not enough eggs is store!");
                        Console.WriteLine($"You can buy only {eggs}.");
                        break;
                    }

                    eggs -= moreEggs;
                    eggsSold += moreEggs;
                }
                else if (command == "Fill")
                {
                    eggs += moreEggs;
                }
            }
        }