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

/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
public class Solution          
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
	Scanner in = new Scanner(System.in);
	int n = in.nextInt();
	int k = in.nextInt();
	ArrayList<Integer> store = new ArrayList<Integer>();
	for(int i=0;i<n;i++){
	    store.add(in.nextInt());
	}
	Collections.sort(store);
	int result = n;
	for(int i=0;i<n-1;i++){
	    if(store.get(i+1)>store.get(i)&&store.get(i+1)<=store.get(i)+k){
	        result--;
	    }
	}
	System.out.println(result);
}

}