#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
#include<string>
#include<cmath>
using namespace std;
int n;
struct nn
{
	int x,y;
}a[5000];
int maxx=-10000;
void llne(int A,int B,int C)
{
	if(A==0 && B==0)return ;
	int sum=0;
	for(int i=1;i<=n;i++)
		if(a[i].x*A+a[i].y*B+C==0)
			sum++;
	maxx=max(sum,maxx);
}
void init()
{
	scanf("%d",&n);
	for(int i=1;i<=n;i++)
		scanf("%d%d",&a[i].x,&a[i].y);
}
int main()
{
	freopen("asm_fuel.in","r",stdin);
	freopen("asm_fuel.out","w",stdout);
	init();
	for(int i=1;i<=n;i++)
		for(int j=1;j<=n;j++)
		{
			if(i<j)
			{
				llne(-1*(a[i].y-a[j].y),(a[i].x-a[j].x),(a[i].y-a[j].y)*a[j].x-(a[i].x-a[j].x)*a[j].y);
			}
		}
	cout<<maxx;
	return 0;
}