import java.awt.Graphics;
import java.applet.Applet;
import java.awt.Color;
import java.awt.*;
public class mstacli extends java.applet.Applet{
  Point[] p = new Point[100];
  Color col1,col2;
  int N,taka,haba,ni,nj,n;
  int k,i,j,l,co;
  double di2,di,cp2,cpx,ys,t;
  double x0,y0,xx,yy,xa1=0,ya1=0,yy2;
  double di4,di3,cp3,cpx3,ys3,t2,ds,us;
  double y20,y21,sa0,sa1;
  int br,br2,u,k2;
  int xz,xz2,yz,yz2,label;
  String NS,habaS,takaS;
  double Nd,takad,habad;
  Color cl[]=new Color[13];
  double kx[]=new double[100];
  double ky[]=new double[100];
  double kz[]=new double[100];

  int ncv[]=new int[100];
  int cv[][]=new int[100][100];

  double ei[]=new double[2000];
  double ej[]=new double[2000];
  double ed[]=new double[2000];

  public double dou(String dous){
    double dou1;
    dou1 = (Double.valueOf(dous)).doubleValue();
    return dou1;
  }
  public double rand(){
    double rand1;
    rand1=Math.random();
    return rand1;
  }
  public void init(){
    col1=Color.black;
    col2=Color.yellow;
    cl[0]=Color.white;
    cl[1]=Color.red;
    cl[2]=new Color(199,111,238);
    takaS=getParameter("takap");
    habaS=getParameter("habap");
    NS=getParameter("Np");
    habad=dou(habaS);
    takad=dou(takaS);
    Nd=dou(NS);
    if(Nd==20){
      Nd=3+27*rand();
    }
    haba=(int)habad;
    taka=(int)takad;
    N=(int)Nd;
  }
  double x1[]=new double[100];
  double y1[]=new double[100];
  int x[]=new int[100];
  int y[]=new int[100];
  double s[]=new double[100];
  String sss[]=new String[100];
  public double jou(double a,double b){
    double jou1;
    jou1=Math.pow(a,b);
    return jou1;
  }
  void heapv(double te1[],double te2[],double te3[],int NN){
    int kk,kks,ii,jj,mm;
    double b1,b2,b3,c1,c2,c3;
    kks=(int)(NN/2);
    for(kk=kks;kk>=1;kk--){
      ii=kk;
      b1=te1[ii-1];b2=te2[ii-1];b3=te3[ii-1];
      while(2*ii<=NN){
        jj=2*ii;
        if(jj+1<=NN){
          if(te1[jj-1]<te1[jj]){
            jj++;
          }
        }
        if(te1[jj-1]<=b1){
          break;
        }
        te1[ii-1]=te1[jj-1];te2[ii-1]=te2[jj-1];te3[ii-1]=te3[jj-1];
        ii=jj;
      }//wend
      te1[ii-1]=b1;te2[ii-1]=b2;te3[ii-1]=b3;
    }//next kk
    for(mm=NN-1;mm>=1;mm--){
      c1=te1[mm];c2=te2[mm];c3=te3[mm];
      te1[mm]=te1[0];te2[mm]=te2[0];te3[mm]=te3[0];
      ii=1;
      while(2*ii<=mm){
        kk=2*ii;
        if(kk+1<=mm){
          if(te1[kk-1]<=te1[kk]){
            kk++;
          }
        }
        if(te1[kk-1]<=c1){
          break;
        }
        te1[ii-1]=te1[kk-1];te2[ii-1]=te2[kk-1];te3[ii-1]=te3[kk-1];
        ii=kk;
      }//wend
      te1[ii-1]=c1;te2[ii-1]=c2;te3[ii-1]=c3;
    }//next mm
  }
  public void paint(java.awt.Graphics g){
    g.setColor(col1);
    g.fillRect(1,1,haba,taka);
    g.setColor(col2);
    Point old,current;
    N=n;
    for(k=0;k<N;k++){
      x1[k]=p[k].x+Math.cos(k*1.1)+k*0.0001;
      y1[k]=p[k].y+Math.sin(k*1.1)+k*0.001;
      x[k]=(int)(x1[k]);
      y[k]=(int)(y1[k]);
      s[k]=jou(x1[k]*x1[k]+y1[k]*y1[k],0.5);
      g.fillOval(x[k]-3,y[k]-3,6,6);
    }
    heapv(s,x1,y1,N);
    g.setColor(cl[1]);
    co=0;
    for(i=1;i<=N-1;i++){
        for(j=i+1;j<=N;j++){
            ei[co]=i-1;
            ej[co]=j-1;
            ed[co]=jou(jou(x1[i-1]-x1[j-1],2)+jou(y1[i-1]-y1[j-1],2),0.5);
            co++;
        }//next j
    }//next i
    heapv(ed,ei,ej,co);
    g.setColor(cl[0]);
    for(i=0;i<N;i++){
        ncv[i]=0;
    }
    for(i=0;i<co;i++){
        label=0;
        for(j=0;j<ncv[(int)ei[i]];j++){
            if(cv[(int)ei[i]][j]==(int)ej[i]){
                label=1;
            }
        }//j
        if(label==0){
            g.drawLine((int)x1[(int)ei[i]],(int)y1[(int)ei[i]],(int)x1[(int)ej[i]],(int)y1[(int)ej[i]]);
            ni=ncv[(int)ei[i]];
            nj=ncv[(int)ej[i]];

            cv[(int)ei[i]][ncv[(int)ei[i]]]=(int)ej[i];
            ncv[(int)ei[i]]++;
            for(j=0;j<nj;j++){
                cv[(int)ei[i]][ncv[(int)ei[i]]]=cv[(int)ej[i]][j];
                ncv[(int)ei[i]]++;
                cv[cv[(int)ej[i]][j]][ncv[cv[(int)ej[i]][j]]]=(int)ei[i];
                ncv[cv[(int)ej[i]][j]]++;
                for(k=0;k<ni;k++){
                    cv[cv[(int)ej[i]][j]][ncv[cv[(int)ej[i]][j]]]=cv[(int)ei[i]][k];
                    ncv[cv[(int)ej[i]][j]]++;
                }
            }//j

            cv[(int)ej[i]][ncv[(int)ej[i]]]=(int)ei[i];
            ncv[(int)ej[i]]++;
            for(j=0;j<ni;j++){
                cv[(int)ej[i]][ncv[(int)ej[i]]]=cv[(int)ei[i]][j];
                ncv[(int)ej[i]]++;
                cv[cv[(int)ei[i]][j]][ncv[cv[(int)ei[i]][j]]]=(int)ej[i];
                ncv[cv[(int)ei[i]][j]]++;
                for(k=0;k<nj;k++){
                    cv[cv[(int)ei[i]][j]][ncv[cv[(int)ei[i]][j]]]=cv[(int)ej[i]][k];
                    ncv[cv[(int)ei[i]][j]]++;
                }
            }//j
        }//label=0
    }//i
    g.drawString("N="+N,15,15);
  }
  public boolean mouseDown(Event evt, int x, int y) {
    if(n<50){
      p[n] = new Point(x,y); n++;
    }
    else{
      n=0;
    }
    repaint();
    return true;
  }
}