#include <iostream.h>
#include <stdio.h>
#include <fstream.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>


struct {double x,y,r;} circle[30];

double calct(double x0, double y0, double dx, double dy, double xi, double yi, double ri)
{
  double xc, yc, a, b, c, p, q, t;
  
  xc = (double)(x0 - xi);
  yc = (double)(y0 - yi);
  a = (double)(dx * dx) + (double)(dy * dy);
  b = 2 * (xc * (double)(dx) + yc * (double)(dy));
  c = xc * xc + yc * yc - double(ri * ri);
  p = b / a;
  q = c / a;
  t = - p / 2 - sqrt(p * p / 4 - q);
  return t;
}

double x0, y0, dx, dy;
int num;  
int curkreis = -1;

int findhit()
{
  double mint = 1e+250, t, sx, sy, hx, hy, ndx, ndy, x1, y1;
  int mini = -1;

  for(int i = 0; i < num; i++)
    {
      if(i != curkreis)
	{
	  t = calct(x0, y0, dx, dy, circle[i].x, circle[i].y, circle[i].r);
	  if(t < mint && t > 0) 
	    {
	      mini = i;
	      mint = t;
	    }	  
	}
    }

  if(mini >= 0)
    {
      x1 = x0 + mint * dx;
      y1 = y0 + mint * dy;
      sx = circle[mini].x - x1;
      sy = circle[mini].y - y1;
      hx = sx * sx - sy * sy;
      hy = 2 * sx * sy;
      ndx = - hx * dx - hy * dy;
      ndy = - hy * dx + hx * dy;
      dx = ndx;
      dy = ndy;
      x0 = x1;
      y0 = y1;
      curkreis = mini;
      return mini;
    }
  return -1;
}
    


int prog=0;




int main()
{
  ifstream in("reflect.in");
  

  while(1)
    {
      in >> num;
      if(num == 0) return 0;
      prog++;
      cout << "Scene " << prog << endl;

      for(int i = 0; i < num; i++) {
	in >> circle[i].x;
	in >> circle[i].y;
	in >> circle[i].r;
      }

      in >> x0;
      in >> y0;
      in >> dx;
      in >> dy;

      int n = 0;
      int i = 0;
      while(1)
	{
	  i = findhit();
	  n++;
	  if(n > 10) break;
	  if( i >= 0) 
	    cout << (i+ 1) << " ";
	  else 
	    break;
	}
      
      if( i>= 0)
	{
	  cout << "...\n\n";
	}
      else cout << "inf\n\n";

      
    }
}