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) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int K = scanner.nextInt();
        ArrayList<Integer> a = new ArrayList<>();
        for (int i = 0; i < n; i++) {
            a.add(scanner.nextInt());
        }
        Collections.sort(a);
        int count = 0;
        int r = 0;
        for (int i = 0; i < n - 1; i++) {
            if (a.get(i + 1).equals(a.get(i))) {
                r++;
                continue;
            }
            if (a.get(i + 1) > a.get(i) && a.get(i + 1) <= a.get(i) + K) {
                count += r + 1;
            }
            r = 0;
        }
        System.out.println(n - count);
    }
}