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.*;
import java.util.*;
import java.math.*;

public class Competitive_1 {	
	
	public static void main(String[] args){
		FastReader in = new FastReader();
		int n=in.nextInt(), k=in.nextInt();
		int arr[] = new int[n];
		boolean isRemain[] = new boolean[n];
		
		Arrays.fill(isRemain, true);
		
		for(int i=0; i<n; i++)
			arr[i] = in.nextInt();
		
		sort(arr);
		
		int remain = n;
		
		for(int i=0; i<n-1; ) {
			int next = getNextBig(arr, i);
			
			if(next==-1) {
				break;
			}
			
			if(arr[next] <= arr[i]+k) {
				remain -= next - i;
				i = next;
			}else {
				i = next;
			}
		}
		
		System.out.println(remain);
		
	}

	static int getNextBig(int arr[], int ind) {
		for(int i=ind; i<arr.length; i++)
			if(arr[i]>arr[ind])
				return i;
		return -1;
	}
	
	
	
	public static void sort(int A[]){
		sort(A, 0, A.length-1);
	}
	
	public static void sort(int A[], int start, int end){
		if(start<end){
			int mid = start + (end - start)/2;
			sort(A, start, mid);
			sort(A, mid+1, end);
			
			marge(A, start, mid, end);
		}
	}
	
	private static void marge(int A[], int start, int mid, int end){
		int marged[] = new int[end-start+1];
		int k=0, point_1 = start, point_2 = mid+1;
		
		for(int i=start; i<=end; i++){
			if(point_1>mid)
				marged[k++] = A[point_2++];
			else if(point_2>end)
				marged[k++] = A[point_1++];
			else if(A[point_1]<A[point_2])
				marged[k++] = A[point_1++];
			else
				marged[k++] = A[point_2++];
		}
		
		for(int i=0; i<k; i++)
			A[start++] = marged[i];
	}
	
	
	
	
	
	
	
	
	
	
	
	
	
	static class FastReader
    {
        BufferedReader br;
        StringTokenizer st;
 
        public FastReader()
        {
            br = new BufferedReader(new
                     InputStreamReader(System.in));
        }
 
        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException  e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
 
        int nextInt()
        {
            return Integer.parseInt(next());
        }
 
        long nextLong()
        {
            return Long.parseLong(next());
        }
 
        double nextDouble()
        {
            return Double.parseDouble(next());
        }
 
        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }
	
	
}