#include<cstring>
#include<stdio.h>
const int maxn=201;
int n;
struct din
{
	int x,y;
};
din d[maxn];
int a,b,c;
int max(int x,int y)
{
	if(x>y) return x;
	else return y;
}
int jsline(int x,int y)
{
	int ans=2;
	if(d[x].x==d[y].x&&d[y].y==d[x].y) return ans;
	for(int i=1;i<=n;i++)
	 if(x!=i&&y!=i)
	 {
		if((d[x].x==d[i].x&&d[x].y==d[i].y)||(d[y].x==d[i].x&&d[y].y==d[i].y)) ans++;
		else if(d[x].x==d[y].x&&d[y].x==d[i].x) ans++;
		else if(d[x].x==d[y].x||d[y].x==d[i].x) continue;
		else if(((double)(d[x].y-d[y].y)/(double)d[x].x-d[y].x)==((double)(d[y].y-d[i].y))/(double)(d[y].x-d[i].x)) ans++;
		else continue;
	 }
	 return ans;
}
int main()
{
	freopen("asm_fuel.in","r",stdin);
	freopen("asm_fuel.out","w",stdout);
	scanf("%d",&n);
	for(int i=1;i<=n;i++)
	 scanf("%d%d",&d[i].x,&d[i].y);
	int ret=-2147483600; 
	for(int i=1;i<=n;i++)
	 for(int j=1;j<=n;j++)
	  if(i!=j)
	  {
	 	  ret=max(ret,jsline(i,j));
	  } 
	printf("%d",ret);  
}