2 1
1 1
 4 1
2 2 1 1
 10 1
2 6 3 4 2 4 4 3 2 1
 2 1
999152 999153
 8 1000000
1 1 5 1000000 1000000 2 2 2
 9 2
1 6 1 5 5 8 6 8 7
 15 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
 1 4
8
 10 1
6 3 1 3 6 4 1 3 6 4
 10 1
1 2 3 5 6 8 10 11 9 4
 7 2
1 5 5 8 9 8 8
 2 1000000
1 1000000
 8 2
3 13 9 8 3 13 9 14
 1 1
1
 2 1
1 2

2
 2
 4
 1
 2
 4
 15
 1
 7
 2
 4
 1
 5
 1
 1

import java.util.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
 
public class temp
{
	void solve()
	{
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		int k = sc.nextInt();
		
		TreeMap<Integer,Integer> tm = new TreeMap<>();
		
		for(int i=0;i<n;i++)
		{
			int x = sc.nextInt();
			if(tm.containsKey(x))
				tm.put(x,tm.get(x)+1);
			else
				tm.put(x,1);
		}
		
		int ans = 0;
		int prek = tm.firstKey();
		int precount = tm.get(prek);
		tm.remove(prek);
		
		while(!tm.isEmpty())
		{
			int key = tm.firstKey();
			int count = tm.get(key);
			tm.remove(key);
			
			if(prek + k >= key)
				ans+=precount;
			
			prek = key;
			precount = count;
		}
		
		System.out.println(n - ans);
	}
	
    public static void main(String[] args)
    {
        new temp().solve();
    }
	
    static class FastReader
    {
        BufferedReader br;
        StringTokenizer st;
 
        public FastReader()
        {
            br = new BufferedReader(new
                     InputStreamReader(System.in));
        }
 
        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException  e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
 
        int nextInt()
        {
            return Integer.parseInt(next());
        }
 
        long nextLong()
        {
            return Long.parseLong(next());
        }
 
        double nextDouble()
        {
            return Double.parseDouble(next());
        }
 
        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }
} 