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.*;
import java.io.*;
public class CF990B{
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] s = br.readLine().split(" ");
        int n = Integer.parseInt(s[0]);
        int k = Integer.parseInt(s[1]);

        int ans = 0;
        PriorityQueue<Integer> pq1 = new PriorityQueue<Integer>();
        PriorityQueue<Integer> pq2 = new PriorityQueue<Integer>();
        s = br.readLine().split(" ");
        for(int i=0;i<n;i++){
            pq1.add(Integer.parseInt(s[i]));
        }
        while(!pq1.isEmpty()){
            int bi = pq1.poll();

            while(!pq2.isEmpty()){
                int bj = pq2.poll();
                if(bi <= bj + k && bi > bj){

                }else{
                    ans++;
                }
            }
            pq2.add(bi);
            //System.out.println(bi+" "+ans);
        }
        System.out.println(ans+1);
    }
}
