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){
        Scanner sc = new Scanner(System.in);
        int n, k;
        n = sc.nextInt();
        k = sc.nextInt();
        int[] pd = new int[n];
        for (int i=0; i<n; i++){
            pd[i] = sc.nextInt();
        }
        Arrays.sort(pd);
        for (int i=1; i<n; i++){
            for (int j=0; j<i; j++){
                if (pd[i]-pd[j]<=k){
                    pd[j] = -1;
                }
            }
        }
        int x = 0;
        for (int i=0; i<n; i++){
            if (pd[i]==-1){
                x++;
            }
        }
        System.out.println(x);
    }
}