import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        Point[] points = new Point[n];
        for (int i = 0; i < n; i++) {
            points[i] = new Point(sc.nextInt(), sc.nextInt());
        }
        int max = 0;
        for (int i = 0; i < n; i++) {
            for (int j = i + 1; j < n; j++) {
                Line line = points[i].getLine(points[j]);
                int count = 0;
                for (int k = j + 1; k < n; k++) {
                    if (line.contains(points[k])) {
                        count++;
                    }
                }
                max = Math.max(max, count + 2);
            }
        }
        System.out.println(max);
    }
    
    static class Point {
        int x;
        int y;
        
        public Point(int x, int y) {
            this.x = x;
            this.y = y;
        }
        
        public Line getLine(Point p) {
            return new Line(y - p.y, x - p.x, x, y);
        }
    }
    
    static class Line {
        int a;
        int b;
        int x;
        int y;
        
        public Line(int a, int b, int x, int y) {
            this.a = a;
            this.b = b;
            this.x = x;
            this.y = y;
        }
        
        public boolean contains(Point p) {
            return a * (p.x - x) - b * (p.y - y) == 0;
        }
    }
}
    
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}