BombNumbers

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

namespace _12.Bomb_Numbers
{
    class Program
    {
        static void Main(string[] args)
        {
            var numbers = Console.ReadLine().Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToList();

            int[] commands = Console.ReadLine().Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray();
            int specialNumber = commands[0];
            int offset = numbers.IndexOf(specialNumber);
            int power = commands[1];
            while (numbers.IndexOf(specialNumber) == -1)
            {
                int startIndex = Math.Max(0, offset - power);
                int countToRemove = Math.Min(power*2 + 1, Math.Abs(numbers.Count - startIndex));
                numbers.RemoveRange(startIndex, countToRemove);

                offset = numbers.IndexOf(specialNumber);
            }


            Console.WriteLine(numbers.Sum());
        }
    }
}