import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] xarr = new int[n];
        int[] yarr = new int[n];
        for (int i = 0; i < n; i++) {
            xarr[i] = sc.nextInt();
            yarr[i] = sc.nextInt();
        }
        int max = 0;
        for (int i = 0; i < n - 1; i++) {
            for (int j = i + 1; j < n; j++) {
                int a = yarr[i] - yarr[j];
                int b = xarr[j] - xarr[i];
                int count = 2;
                for (int k = j + 1; k < n; k++) {
                    if (a * xarr[k] + b * yarr[k] == 0) {
                        count++;
                    }
                }
                max = Math.max(max, count);
            }
        }
        System.out.println(max);
    }
}