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.Arrays;
import java.util.StringTokenizer;

public class A {

    static int n, k;
    static Integer[] a;

    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);
        n = sc.nextInt(); k = sc.nextInt();
        a = new Integer[n];
        for (int i = 0; i < n; i++)
            a[i] = sc.nextInt();
        Arrays.sort(a);

        int lastEaten = -1, ans = 0;
        for (int i = 1; i < n; i++) {
            int left = binarySearchLeft(lastEaten + 1, i - 1, a[i] - k);
            int right = binarySearchRight(lastEaten + 1, i - 1, a[i] - 1);
            if (left == -1 || right == -1)
                continue;
            ans += right - left + 1;
            lastEaten = right;
        }

        out.println(n - ans);
        out.flush();
        out.close();
    }

    static int binarySearchRight(int lo, int hi, int key) {
        int ans = -1;
        while (lo <= hi) {
            int mid = lo + hi >> 1;
            if (a[mid] <= key)
                lo = (ans = mid) + 1;
            else
                hi = mid - 1;
        }
        return ans;
    }

    static int binarySearchLeft(int lo, int hi, int key) {
        int ans = -1;
        while (lo <= hi) {
            int mid = lo + hi >> 1;
            if (a[mid] >= key)
                hi = (ans = mid) - 1;
            else
                lo = mid + 1;
        }
        return ans;
    }

    static class Scanner
    {
        StringTokenizer st;
        BufferedReader br;

        public Scanner(InputStream system) {br = new BufferedReader(new InputStreamReader(system));}
        public Scanner(String file) throws Exception {br = new BufferedReader(new FileReader(file));}
        public String next() throws IOException
        {
            while (st == null || !st.hasMoreTokens()) st = new StringTokenizer(br.readLine());
            return st.nextToken();
        }
        public String nextLine()throws IOException{return br.readLine();}
        public int nextInt() throws IOException {return Integer.parseInt(next());}
        public double nextDouble() throws IOException {return Double.parseDouble(next());}
        public char nextChar()throws IOException{return next().charAt(0);}
        public Long nextLong()throws IOException{return Long.parseLong(next());}
        public boolean ready() throws IOException{return br.ready();}
        public void waitForInput() throws InterruptedException {Thread.sleep(3000);}
    }
}
