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 Ex2 {
	public static void main(String args[]) {
		Scanner in = new Scanner(System.in);
		int n, k;
		int counter = 0;
		int old;
		int counterOld = 1;
		ArrayList<Integer> a;
		
		n = in.nextInt();
		k = in.nextInt();
		a = new ArrayList<Integer>();
		for (int i = 0; i < n; i++) {
			a.add(in.nextInt());
 		}
		
		Collections.sort(a);
		old = a.get(0);
		for ( int i = 1; i < a.size(); i ++) {
			if (a.get(i) == old) {
				counterOld++;
				continue;
			}
			if (a.get(i) <= a.get(i-1) + k) {
				counter += counterOld;
			}
			old = a.get(i);
			counterOld = 1;
		}	
		System.out.println(n-counter);
	}
}
