06. Cake

using System;

namespace Cake
{
    class Program
    {
        static void Main(string[] args)
        {
            double w = double.Parse(Console.ReadLine());
            double l = double.Parse(Console.ReadLine());

            double Cake = w * l;
            double TotalCake = 0;


            while(Cake>= TotalCake)
            {
                string TakeCake = Console.ReadLine();

                if (TakeCake != "STOP")
                {

                    TotalCake += double.Parse(TakeCake);
                }
                else
                {
                    Console.WriteLine($"{Cake-TotalCake} pieces are left.");
                    break;
                }
            }

            if (Cake <TotalCake)
            {
                Console.WriteLine($"No more cake left! You need {TotalCake-Cake} pieces more.");
            }



        }
    }
}