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.InputStream;
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.Random;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.TreeMap;
import java.util.Vector;



public class solve {
  
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);
		int n =sc.nextInt();
		int k =sc.nextInt();
		int[] a = sc.nextIntArraySorted(n);
		
		int ans =0 ;
		int e =0 ;
		for(int i=0;i<n-1;i++) {
			if(a[i]==a[i+1])
				e++;
			if(a[i]!=a[i+1]) {
				if(a[i]+k >=a[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 Scanner {
	StringTokenizer st;
	BufferedReader br;

	public Scanner(InputStream s) {
		br = new BufferedReader(new InputStreamReader(s));
	}

	public Scanner(String f) throws FileNotFoundException {
		br = new BufferedReader(new FileReader(f));
	}

	public String next() throws IOException {
		while (st == null || !st.hasMoreTokens())
			st = new StringTokenizer(br.readLine());
		return st.nextToken();
	}

	public int nextInt() throws IOException {
		return Integer.parseInt(next());
	}

	public long nextLong() throws IOException {
		return Long.parseLong(next());
	}

	public String nextLine() throws IOException {
		return br.readLine();
	}

	public double nextDouble() throws IOException {
		return Double.parseDouble(next());
	}

	public boolean ready() throws IOException {
		return br.ready();
	}

	public int[] nextIntArray(int n) throws IOException {
		int[] a = new int[n];
		for (int i = 0; i < n; i++)
			a[i] = nextInt();
		return a;
	}

	public int[] nextIntArray1(int n) throws IOException {
		int[] a = new int[n + 1];
		for (int i = 1; i <= n; i++)
			a[i] = nextInt();
		return a;
	}

	public int[] shuffle(int[] a, int n) {
		int[] b = new int[n];
		for (int i = 0; i < n; i++)
			b[i] = a[i];
		Random r = new Random();
		for (int i = 0; i < n; i++) {
			int j = i + r.nextInt(n - i);
			int t = b[i];
			b[i] = b[j];
			b[j] = t;
		}
		return b;
	}

	public int[] nextIntArraySorted(int n) throws IOException {
		int[] a = nextIntArray(n);
		a = shuffle(a, n);
		Arrays.sort(a);
		return a;
	}

	public long[] nextLongArray(int n) throws IOException {
		long[] a = new long[n];
		for (int i = 0; i < n; i++)
			a[i] = nextLong();
		return a;
	}

	public long[] nextLongArray1(int n) throws IOException {
		long[] a = new long[n + 1];
		for (int i = 1; i <= n; i++)
			a[i] = nextLong();
		return a;
	}

	public long[] nextLongArraySorted(int n) throws IOException {
		long[] a = nextLongArray(n);
		Random r = new Random();
		for (int i = 0; i < n; i++) {
			int j = i + r.nextInt(n - i);
			long t = a[i];
			a[i] = a[j];
			a[j] = t;
		}
		Arrays.sort(a);
		return a;
	}
}

