
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
public static void main(String[] args) {
    FastReader read = new FastReader() ;
    int n = read.nextInt() ; 
    int d = read.nextInt() ; 
    int arr[] = new int [n] ; 
    
    for (int i = 0; i < n; i++) {
        arr[i] = read.nextInt() ; 
        
    }
    if(n>1){
    Arrays.sort(arr);
    int ans = 0 ; 
    for (int i = 0 , j = n-1 ; i <= j;) {
        if(arr[j] - arr[i] > d ){
//            System.out.println(arr[i] +" " + arr[j]);
//            System.out.println(dis[i]+" "+dis[j]);
            if(arr[j-1] - arr[i] > arr[j] - arr[i+1]){
               i++;
               ans++;
            }
            else{
                j--; 
                ans++;
                
            }
        }
        else {
           break;
        }
        
    }
    System.out.println(ans);
 
    }
    else  {
        System.out.println(0);
    }
            
}}
    


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;
    }
}
