Bohemcho The Bad Ghost

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Problem5
{
    class Problem5
    {
        static void Main()
        {
            string command = Console.ReadLine();
            int counter = 0;
            ulong floor = 0;
            ulong score = 0;

            while (command != "Stop, God damn it")
            {
                floor = ulong.Parse(command);


                string oddinput = Console.ReadLine();

                int[] apartments = oddinput.Split(' ').Select(int.Parse).ToArray();


                for (int i = 0; i < apartments.Length; i++)
                {

                    floor = floor ^ (1ul << apartments[i]);

                }

                for (int i = 0; i < 32; i++)
                {
                    ulong mask = (floor >> i) & 1;

                    if (mask == 1)
                    {
                        counter++;
                    }
                }

                score += floor;

                command = Console.ReadLine();
            }


            Console.WriteLine("Bohemcho left {0} lights on and his score is {1}", counter, score);


        }
    }
}