Emergency Repairs Bay Ivan

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

namespace BayIvan
{
    class Program
    {
        static void Main(string[] args)
        {
            var wall = ulong.Parse(Console.ReadLine());
            var kits = int.Parse(Console.ReadLine());
            var numberOfAttacks = int.Parse(Console.ReadLine());

            for (int i = 0; i < numberOfAttacks; i++)
            {
                var attack = int.Parse(Console.ReadLine());
                wall = wall & ~((ulong)1 << attack);
            }
            for (int i = 0; i < 64; i++)
            {
              //  bool hole = false;
                if ((wall & (ulong)1<<i) == 0 && (wall & (ulong)1<<i+1) == 0 && kits>0&&i<63)
                {
                    wall = wall | ((ulong)1<<i);
                    kits--;
                    i++;
                  //  hole = true;
                     while (kits>0&& (wall & (ulong)1 << i) == 0)
                    {
                        wall = wall | ((ulong)1 << i);
                        kits--;
                        i++;
                    }
                }

            }
            Console.WriteLine(wall);
        }
    }