#include<iostream>#include<cstdio>using namespace std;class Point{public:int x,y;}p[1005];class Line{public:Line(Point &p1,Point &p2){a=p1.y-p2.y;b=p2.x-p1.x;c=p1.x*(p2.y-p1.y)+p1.y*(p1.x-p2.x);}bool point_in_line(Point &p){return a*p.x+b*p.y+c==0;}int a,b,c;};int main(){int n,i,j,k,MAX,tmp,C=1;while(scanf("%d",&n),n){MAX=0;for(i=1;i<=n;i++)scanf("%d%d",&p[i].x,&p[i].y);for(i=1;i<=n;i++)for(j=i+1;j<=n;j++){tmp=2;Line L(p[i],p[j]);for(k=j+1;k<=n;k++){if(L.point_in_line(p[k]))tmp++;}if(tmp>MAX)MAX=tmp;}if(MAX<4)MAX=0;printf("Photo %d: %d points eliminatedn",C++,MAX);}return 0;}
