#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define TRUE 1
#define FALSE 0
#define MYFILE "reflect.in"

#define HITS_MAX 10
#define SPHERES_MAX 25

typedef struct {
	double x,y;
	} VECTOR;
	
typedef struct {
	int x,y,r;
	} SPHERE;

typedef struct {
	double x,y,dx,dy;
	} RAY;

int main()
{
	FILE* fin = fopen(MYFILE, "r");
	int n, inf;
	SPHERE spheres[SPHERES_MAX];
	RAY ray, newray;
	int hits[HITS_MAX+1];
	
	double A,B,C,D,lambda,newlambda;
	double norme, wt, wn;
	VECTOR delta, vN, vT;
	
	int i,j,k,bcount,icount;
	
	fscanf(fin, "%d", &n);
	icount = 0;
	while(n>0)
	{
		icount++;
		
		for(i=0; i<n; i++)
			fscanf(fin, "%d %d %d",&spheres[i].x,&spheres[i].y,&spheres[i].r);
			
		fscanf(fin, "%lf %lf %lf %lf",&ray.x,&ray.y,&ray.dx,&ray.dy);
		
		bcount = 0; inf = FALSE;
		for(j=0;j<HITS_MAX;j++)
			hits[j] = -1;
			
		while(bcount<=HITS_MAX && !inf)
		{
			lambda = -1;
			for(i=0;i<n;i++)
			{
				delta.x = ray.x - spheres[i].x;
				delta.y = ray.y - spheres[i].y;
				
				A = pow(ray.dx,2) + pow(ray.dy,2);
				B = ray.dx*delta.x + ray.dy*delta.y;
				C = pow(delta.x,2) + pow(delta.y,2) - pow(spheres[i].r,2);
				D = pow(B,2) - A*C;
				
				if(D>0	&& (newlambda = -(B+sqrt(D))/A)>0
					&& (newlambda<lambda || lambda<0))
				{
					hits[bcount] = i;
					
					if(bcount == HITS_MAX) break;
					
					lambda = newlambda;
					newray.x = ray.x + lambda*ray.dx;
					newray.y = ray.y + lambda*ray.dy;
				}
			}
			
			k = hits[bcount];
			if(k>=0 && bcount<HITS_MAX)
			{
				ray.x = newray.x;
				ray.y = newray.y;
				
				vN.x = ray.x - spheres[k].x;
				vN.y = ray.y - spheres[k].y;
				norme = sqrt(pow(vN.x,2)+pow(vN.y,2));
				vN.x /= norme;
				vN.y /= norme;
				
				vT.x = -vN.y;
				vT.y = vN.x;
				
				wt = ray.dx*vT.x + ray.dy*vT.y;
				wn = -(ray.dx*vN.x + ray.dy*vN.y);
				
				ray.dx = wt*vT.x + wn*vN.x;
				ray.dy = wt*vT.y + wn*vN.y;
			}

			if(k<0)
			{
				inf = TRUE;
			}
			else
			{
				bcount++;
			}
		}
		
		printf("\nScene %d\n", icount);
		for(i=0; i<=HITS_MAX; i++)
		{
			if(hits[i]>=0)
			{
				if(i<HITS_MAX)
				{
					printf("%d ", hits[i]+1);
				}
				else
				{
					printf("...");
				}
			}
			else
			{
				if(i<HITS_MAX)
				{
					printf("inf"); break;
				}
			}
		}
		printf("\n");
		
		fscanf(fin,"%d",&n);
	}
	
	fclose(fin);
	return 0;
}