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 whatever; // 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 Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner scan = new Scanner(System.in);
        long n = scan.nextLong();
                long k = scan.nextLong();
                List<Long> arr = new ArrayList<>();
                for(int i=0;i<n;i++){
        			long val = scan.nextLong();
        			arr.add(val);
                }
                arr.sort(Comparator.naturalOrder());
                        //System.out.println(arr);

                        // List<Long> xx = new ArrayList<>();
                        // xx.add(arr.get(0));
                        // for(int i = 1; i < arr.size(); i++){
                        // if(arr.get(i) != arr.get(i-1)) xx.add(arr.get(i));	
                        // }
                        
                       long prev = -1;
                        long count = 1;
	for (int i = 0; i < arr.size(); i++) {
		
		if(prev == -1) prev = arr.get(i);
		else{
		    if(arr.get(i) - prev<=k && arr.get(i) > prev) prev=arr.get(i);
		    else if(arr.get(i) != prev) {
		    	count++;prev = arr.get(i);
		    }
		}
	}      
	System.out.println(count);


	}
}