#include<iostream>
#include<cmath>
#include<cstdio>
#include<cstring>
using namespace std;
int n,x[150],y[150],val[20000],num=0,ma=0;
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",&x[i],&y[i]);
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++)
			{ num=0;if(i!=j&&!(x[i]==x[j]&&y[i]==y[j])){
		           for(int k=1;k<=n;k++)
			    { int x1=x[i]-x[j],x2=x[i]-x[k],x3=x[j]-x[k];
					int y1=y[i]-y[j],y2=y[i]-y[k],y3=y[j]-y[k];
				   if((x1*y2==y1*x2)&&(x2*y3==x3*y2)&&(x1*y3==x3*y1))
					  num++;
			    }}
			ma=max(num,ma);
		  } }
		  printf("%d",ma);
		  return 0;
	  }