#include <fstream.h>
#include <math.h>

double sx[40], sy[40], sr[40];
int n;
double x,y, dx, dy;
int last;
const inf = 1000000000;

double inter(double sx, double sy, double sr)
{
 double l1, l2;
 double A= dx*dx+dy*dy;
 // cout<<A;
 double B=2*dx*(x-sx)+2*dy*(y-sy);
 // cout<<'b'<<B;
 double C=(x-sx)*(x-sx)+(y-sy)*(y-sy)-sr*sr;
 // cout<<'c'<<C<<endl;
 if (B*B-4*A*C>=0)
   {
     l1 = (-B+sqrt(B*B-4*A*C))/2/A;
     l2 = (-B-sqrt(B*B-4*A*C))/2/A;
     if (l1<0) l1 = inf;
     if (l2<0) l2 = inf;
     if (l1>l2) return l2;
     else return l1;
   }
 else return inf;
 
}

int calc(double sx, double sy, double sr,double  l)
{
  double w;
  double px = x+dx*l;
  double py = y+dy*l;
  w = acos(((sx-px)*dx + 
	    (sy-py)*dy)/
	   (sqrt((sx-px)*(sx-px)+(sy-py)*(sy-py))*sqrt(dx*dx+dy*dy)));
  w -= acos(0);
  //  cout<<l<<' '<<px<<' '<<py<<' '<<w<<endl;
  double dx2, dy2;
  dx2 = cos(w)*dx-sin(w)*dy;
  dy2 = sin(w)*dx+cos(w)*dy;
  //  cout<<' '<<dx2<<' '<<dy2;
  if (fabs(dx2*(sx-px)+dy2*(sy-py))>=0.00001) w = -w;
  double w2 = 2*w;
  dx2 = cos(w2)*dx-sin(w2)*dy;
  dy2 = sin(w2)*dx+cos(w2)*dy;
  dx = dx2;
  dy = dy2;
  x = px;
  y = py;
  return 0;  
	   
}



main()
{
  int i,j;

  ifstream ein("reflect.in");
  for (int kase=1; ; kase++)
    {
      
      ein>>n;
      if (n==0) break;
      cout<<"Scene "<<kase<<endl;
      for (i=0; i<n; i++)
	ein>>sx[i]>>sy[i]>>sr[i];
      ein>>x>>y>>dx>>dy;
      last = -1;
      for (i=0; i<11; i++)
	{
	  double min=inf;
	  int best=-1;
	  for (j=0; j<n; j++)
	    if (j!=last)
	      {
		double r=inter(sx[j], sy[j], sr[j]);
		if (min>r) 
		  {
		    min=r;
		    best = j;
		  }
		
	      }
	  if (i!=0) cout<<' ';
	  if (min==inf) 
	    {
	      cout<<"inf";
	      break;
	    }
	  calc(sx[best], sy[best], sr[best], min);
	  if (i<10) cout<<best+1;
	  last = best;
	}
      if (i==11) cout<<"...";
      cout<<endl<<endl;
    }
}