class Program
    {
        static void Main(string[] args)
        {
            int[] nk = Array.ConvertAll(Console.ReadLine().Split(' '), num => int.Parse(num));
            int[] pinList = Array.ConvertAll(Console.ReadLine().Split(' '), num => int.Parse(num));
            for(int i = 0; i < pinList.Length; i++)
            {
                if (pinList[i] == 0)
                {
                    continue;
                }
                for (int j = i+1;j < pinList.Length; j++)
                {
                    if (pinList[j] - pinList[i] >= nk[1])
                    {
                        break;
                    }
                    pinList[j] = 0;
                }
            }
            Console.WriteLine(PinCount(pinList));
        }

        private static int PinCount(int[] pinList)
        {
            int count = 0;
            foreach (int pin in pinList)
            {
                if(pin != 0)
                {
                    count++;
                }
            }
            return count;
        }
    }