#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <algorithm>
#include <cstring>
#include <string>
#include <cmath>
using namespace std;

struct point
{
	int x,y;
};

point pt[102];

struct oncefx
{
	double k,b;
	bool online(point &pt)
	{
		return fabs((double)pt.y - k*(pt.x)+b) < 0.0001;
	}
};

int main()
{
	freopen("asm_fuel.in", "r", stdin);
	freopen("asm_fuel.out", "w", stdout);
	int n;
	int i,j,k;
	int x1,y1;
	int x2,y2;
	int r = 0;
	int ct;
	double xielv;
	double syx;
	
	scanf("%d", &n);
	if(n <= 2)
	{
		cout << n << endl;
		return 0;
	}
	
	for(i = 1; i <= n; i++)
	{
		scanf("%d %d", &pt[i].x, &pt[i].y);
	}
	
	oncefx fx;
	for(i = 1; i <= n; i++)
	{
		for(j = 1; j <= n; j++)
		{
			if(i == j)continue;
			x1 = pt[i].x;
			y1 = pt[i].y;
			x2 = pt[j].x;
			y2 = pt[j].y;
			xielv = ((double)y2 - y1)/(x2 - x1);
			syx = y2-xielv*x2;
			fx.k = xielv;
			fx.b = syx;
			ct = 0;
			for(k = 1; k <= n; k++)
				if(fx.online(pt[k]))ct++;
			r = max(r, ct);
		}
	}
	cout << r << endl;
	
	return 0;
}