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.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.lang.reflect.Array;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Map.Entry;
import java.util.Scanner;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.TreeMap;
import java.util.Vector;



public class solve {
	 static PrintWriter out = new PrintWriter(System.out);
	static FastScanner sc =new FastScanner();
  
	public static void main(String[] args) throws IOException{
		
		int n =sc.nextInt();
		int k =sc.nextInt();
		ArrayList<Integer>a = new ArrayList<>();
		for(int i=0;i<n;i++)
			a.add(sc.nextInt());
		int ans =0 ;
		Collections.sort(a);
		int e =0 ;
		for(int i=0;i<n-1;i++) {
			if(a.get(i)==a.get(i+1))
				e++;
			if(a.get(i)!=a.get(i+1)) {
				if(a.get(i)+k >=a.get(i+1)) {
					ans++;
					ans+=e;
				}
				e=0;
			}
		}
		System.out.println(n-ans);
	
		// 42 53 54 55 101 101 102
			
	}
	
		
}
	    
	    
	    
	    

	
	
	
	















	















































































class pair implements Comparable{
	int x ,y,z;
	pair(int x,int y,int z)
	{
		this.x=x;
		this.y=y;
		this.z=z;
	}
	@Override
	public int compareTo(Object arg0) {
		
		pair u =((pair)arg0);
		
		return -this.z+u.z;
	}
}
 	


	    
	    
	    



class FastScanner {




    BufferedReader br;
    StringTokenizer st;

    public FastScanner() {
        br = new BufferedReader(new InputStreamReader(System.in));
    }

    public FastScanner(String s) {
        try {
            br = new BufferedReader(new FileReader(s));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

    String nextToken() {
        while (st == null || !st.hasMoreElements()) {
            try {
            	
                st = new StringTokenizer(br.readLine());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    int nextInt() {
        return Integer.parseInt(nextToken());
    }

    long nextLong() {
        return Long.parseLong(nextToken());
    }

    double nextDouble() {
    	
        return Double.parseDouble(nextToken());
    }
 

}