package main

import "fmt"

func main() {
	var N int
	fmt.Scan(&N)

	X := make([]float64, N)
	Y := make([]float64, N)

	for i := 0; i < N; i++ {
		fmt.Scan(&X[i], &Y[i])
	}

	var count int
	var max int
	for i := 0; i < N; i++ {
		for j := i + 1; j < N; j++ {
			count = 0
			for k := 0; k < N; k++ {
				if (X[j]-X[i])*(Y[k]-Y[i]) == (Y[j]-Y[i])*(X[k]-X[i]) {
					count++
				}
			}

			if max < count {
				max = count
			}
		}
	}

	fmt.Println(max)
}