import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] x = new int[n];
		int[] y = new int[n];
		for (int i = 0; i < n; i++) {
			x[i] = sc.nextInt();
			y[i] = sc.nextInt();
		}
		sc.close();

		int ans = 0;
		for (int i = 0; i < n; i++) {
			for (int j = i + 1; j < n; j++) {
				int dx = x[j] - x[i];
				int dy = y[j] - y[i];
				int cnt = 2;
				for (int k = j + 1; k < n; k++) {
					int dx2 = x[k] - x[i];
					int dy2 = y[k] - y[i];
					if (dx * dy2 == dy * dx2) {
						cnt++;
					}
				}
				ans = Math.max(ans, cnt);
			}
		}
		System.out.println(ans);
	}
}