	// _________________________RATHOD_____________________________________________________________
import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.util.Scanner; 
import java.util.StringTokenizer; 
import java.util.*;  
public class Main 
{ 
    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; 
        } 
    } 
  
    public static void main(String[] args) 
    { 
        FastReader sc=new FastReader(); 
        int n=sc.nextInt();
        int d=sc.nextInt();
        int ar[]=new int[n];
        for(int i=0;i<n;i++)
        ar[i]=sc.nextInt();
        Arrays.sort(ar);
        int maxs=Integer.MIN_VALUE;
        for(int i=0;i<n;i++)
        {
            int size=0;
            for(int j=i;j<n;j++)
            {
                if(ar[j]-ar[i]<=d)
                {
                    size++;
                }
                else
                break;
            }
            
            if(size>maxs)
            {
            //System.out.println(size);    
            maxs=size;
            }
        }
        System.out.println(n-maxs);
    }        
      
    
     
} 