package main

import . "fmt"

func main() {
	var n int
	Scan(&n)
	x:=make([]int,n)
	y:=make([]int,n)
	for i:=range x {
		Scan(&x[i],&y[i])
	}
	var ans int = 2
	for i:=0; i<n; i++ {
		x0,y0 := x[i],y[i]
		for j:=i+1; j<n; j++ {
			x1,y1:=x[j],y[j]
			cnt := 0
			for k:=0; k<n; k++ {
				if (x1-x0)*(y[k]-y0) == (y1-y0)*(x[k]-x0) {
					cnt++
				}
			}
			if cnt > ans {
				ans = cnt
			}
		}
	}
	Println(ans)
}