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.ArrayList;
import java.util.Collections;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scan=new Scanner(System.in);
        int n =scan.nextInt();
        int k = scan.nextInt();
        ArrayList<Integer> array=new ArrayList<>();
        int freq[]=new int[1000010];
        for(int i=0;i<n;i++){
            int h = scan.nextInt();
            if(freq[h]==0) {
                array.add(h);
            }
            freq[h]++;
        }
        Collections.sort(array);
        for(int i=0;i<array.size();){
            if(i>=0 && (i+1)<array.size() && array.get(i+1)>array.get(i) && array.get(i+1)<=(array.get(i)+k)){
                array.remove(i);
            }else{

                i++;
            }
        }
        System.out.println(array.size());
    }
}
