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.IOException;
import java.io.InputStreamReader;
import java.util.*;

public class B {

    public static void main(String[] args) {
        FastScanner scanner = new FastScanner();
        int n = scanner.nextInt();
        int K = scanner.nextInt();
        List<Integer> a = new ArrayList<>(n);
        String line = scanner.nextLine();
        line = line.trim();
        String[] comps = line.split(" ");
        for (int i=0; i < n; ++i) {
            a.add(Integer.parseInt(comps[i]));
        }

        Collections.sort(a);

        int i = 0;
        int j = 1;
        int sz = a.size();
        int ans = sz;
        while(j < sz) {
            if ((a.get(i) < a.get(j)) && ((a.get(j) - a.get(i)) <= K)) {
                ans -= (j - i);
            } else if (a.get(i).equals(a.get(j))) {
                while((j < sz) && (a.get(i).equals(a.get(j)))) {
                    ++j;
                }
                continue;
            }
            i=j;
            ++j;
        }
        System.out.println(ans);
    }


    public static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner() {
            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;
        }
    }
}
