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 Main {
    public static void main(String args[] ) throws Exception {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt(), k = sc.nextInt();
        int arr[]= new int[n];
        int log[]=new int[1000001+200000];
        for(int i=0; i<n; i++){
            arr[i]=sc.nextInt();
            log[arr[i]]++;
        }
        Arrays.sort(arr);
        int min=n;
        for(int i=0; i<n; i++){
            if(log[arr[i]+k]>0){
                min--;
                log[arr[i]]--;
            }
        }
        System.out.println(min);
    }
}