import java.util.*;

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();
        }
    
        int ans = 0;
        for (int i = 0; i < N; i++) {
            for (int j = i+1; j < N; j++) {
                int cnt = 2;
                for (int k = j+1; k < N; k++) {
                    if (X[i]*Y[k]+X[j]*Y[i]+X[k]*Y[j]==X[i]*Y[j]+X[j]*Y[k]+X[k]*Y[i]) cnt++;
                }
                ans = Math.max(ans, cnt);
            }
        }

        System.out.println(ans);
     }
}