#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cmath>
#include<iomanip>
#include<cstring>
#include<queue>
#include<ctime>
#include<cstdlib>
using namespace std;

int n=0,ans=0;
int x[110]={},y[110]={};
int a=0,b=0;
long long c=0;

void init(){
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>x[i]>>y[i];
	}
}
void work(){
	for(int i=1;i<n;i++)
	{
		for(int j=i+1;j<=n;j++)
		{
			if(x[i]==x[j] && y[i]==y[j])	continue;
			int num=0;
			a=y[i]-y[j];
			b=x[j]-x[i];
			c=(x[j]-x[i])*y[j]+(y[i]-y[j])*x[j];
			for(int k=1;k<=n;k++)
				if(a*x[k]+b*y[k]+c==0)	num++;
			if(num>ans)	ans=num;
		}
	}
	cout<<ans<<endl;
}
int main(){
	freopen("asm_fuel.in","r",stdin);
	freopen("asm_fuel.out","w",stdout);
	
	init();
	work();
	
	fclose(stdin);fclose(stdout);
	return 0;
}