import java.awt.Point;
import java.io.*;
import java.util.*;

class Kmeans {

  public static void main ( String [] arguments ) {
   
    String str,s1;
    int n,k;                                                              //10
    BufferedReader br = new BufferedReader( new InputStreamReader(System.in));
  
    System.out.println("how many clusters do you want?");
    str = br.readLine();
    k = Integer.parseInt(str);
    System.out.println("how many vectors do you have?");
    s1 = br.readLine();
    n = Integer.parseInt(s1);
    Acluster[] aclu = new Acluster[k];
    Avector[] vec = new Avector[n];                                       //20

    Kmeans obj = new Kmeans();
    vec = obj.input (vec , n);
    System.out.println ("vectors:");
    for(i=0 ; i<n; i++){
      System.out.println(vec[i].pt);
    }

    Avector[] input ( Avector[] aa,int nn) { 
      String str1,str2;
      BufferedReader br1 = new BufferedReader( new InputStreamReader                          (System.in));  
                                                                          //30
      System.out.println("please  enter  vectors:");
      for(int i=0 ; i<nn ; i++){
        System.out.println("第" + i +"个矢量的x分量:" );
        str1 = br1.readLine();
        try {
          aa[i].pt.x = Integer.parseInt (str1);
        }
        catch(NumberFormatException exc){                                 //40
          System.out.println("Invalid format");
          aa[i].pt.x=0;
        }
   
        System.out.println("第" + i +"个矢量的y分量:");
        str2 = br1.readLine();
        try {
          aa[i].pt.y = Integer.parseInt (str2);
        }
        catch(NumberFormatException exc){                                 //50
          System.out.println("Invalid format");
          aa[i].pt.y=0;
        }
      }
      return aa;
   }
  }

   class Acluster{
     Point center;
     int  member;
     int  index;                                                          //60
  
     public Acluster (Point center, int member, int index){
      this.center = center;
      this.member = member;
      this.index =index;
     }

     public Point getcenter (){
      return center;
     }                                                                    //70

     public int getmember (){
      return member;
     }

     public int getindex (){
      return index;
     }
    }
                                                                           //80
    class Avector{
      Point pt;
      int sign;
      
      public Avector (Point pt ,int sign) {
        this.pt = pt;
        this.sign = sign;
      }

      public int getsign (){                                               //90
        return sign;
      }

      public Point getpt (){
        return pt;
      }
    }
}