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.*;
public class B {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc1 = new Scanner(System.in);
		int n = sc1.nextInt();
		int k = sc1.nextInt();
		int a[] = new int[n];
		ArrayList<Integer> al = new ArrayList<>(n);
		for(int i=0;i<n;i++) {
			al.add(sc1.nextInt());
		}
		Collections.sort(al);
		int x=0;
		int y=1;
		int dup = 1;
		int count = n;
		for(int i=1;i<n;i++) {
			if(al.get(i-1)==al.get(i)) {
				dup++;
			}
			else {
				if(al.get(i-1)<al.get(i) && (al.get(i-1)+k) >= al.get(i)) {
					count = count - dup;
					dup = 1;
				}
			}
		}
		System.out.println(count);
	}

}
