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.io.PrintWriter;
import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.StringTokenizer;

public class TaskB {
    StringTokenizer st;
    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        TaskB task = new TaskB();
        task.open();
        task.solve();
        task.close();
    }

    private void close() {
        out.close();
    }

    private void solve() throws IOException {
        int n = nextInt();
        int K = nextInt();
        int[] bactory = new int[n];
        for (int i = 0; i < n; i++) {
            bactory[i] = nextInt();
        }
        Arrays.sort(bactory);
        int cnt = n;
        for (int i = 1; i < n; i++) {
            if (bactory[i-1] + K >= bactory[i] && bactory[i] > bactory[i-1]) cnt--;
        }
        out.print(cnt);


    }

    private void open() {
        in = new BufferedReader(new InputStreamReader(System.in));
        out = new PrintWriter(System.out);
    }

    private String nextToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            String line = in.readLine();
            if (line == null) return null;
            st = new StringTokenizer(line);
        }
        return st.nextToken();
    }

    private int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }
    private double nextDouble() throws IOException {
        return Double.parseDouble(nextToken());
    }

}
