#include<stdio.h>

#include<math.h>

const double eps=1e-8;

int n;

int cmp(double x)

{

    if(fabs(x)<=eps)return 0;

    if(x<0)return -1;

    return 1;

}

struct Point

{

    double x,y;

    Point (){}

    Point (double _x,double _y)

    {

        x=_x;

        y=_y;

    }

    Point operator -(const Point &b)const {

    return Point (x-b.x,y-b.y);

    }

    double operator *(const Point &b)const {

    return x*b.x+y*b.y;

    }

    double operator ^(const Point &b)const{

    return x*b.y-b.x*y;

    }

};

struct Line

{

    Point s,e;

    Line (){}

    Line (Point  _s,Point _e)

    {

        s=_s;

        e=_e;

    }

};

Line line [(int)1e5+5];

double xmult(Point p0,Point p1,Point  p2)

{

    return (p1-p0)^(p2-p0);

}

bool seg_seg(Line l1,Line l2)

{

    return cmp(xmult(l1.s,l2.s,l2.e))*cmp(xmult(l1.e,l2.s,l2.e))<=0&&cmp(xmult(l2.e,l1.s,l1.e))*cmp(xmult(l2.s,l1.s,l1.e))<=0;

}

bool check(int num)

{

    for(int j=num+1;j<n;j++)

    {

        if(seg_seg(line[num],line[j])==true)

            return false;

    }

    return true;

}

int a[1005];

int main()

{

    double x1,x2,y1,y2;

    while(scanf("%d",&n),n)

    {

        int t=0;

        for(int i=0;i<n;i++)

        {

            scanf("%lf%lf%lf%lf",&x1,&y1,&x2,&y2);

            line[i]=Line(Point(x1,y1),Point(x2,y2));

        }

        for(int i=0;i<n;i++)

            if(check(i))

            a[t++]=i;

        printf("Top sticks: ");

        for(int i=0;i<t;i++)

        {

            printf("%d",a[i]+1);

            if(i<t-1)

                printf(", ");

        }

        printf(".\n");

    }

}