import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        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 = 2;
        for (int i = 0; i < n - 1; i++) {
            HashMap<Point, Integer> sums = new HashMap<>();
            for (int j = i + 1; j < n; j++) {
                Point p = points[i].get(points[j]);
                p.normalize();
                sums.put(p, sums.getOrDefault(p, 0) + 1);
            }
            for (int x : sums.values()) {
                max = Math.max(max, x + 1);
            }
        }
        System.out.println(max);
    }
    
    static class Point {
        int x;
        int y;
        
        public  Point(int x, int y) {
            this.x = x;
            this.y = y;
        }
        
        public Point get(Point p) {
            return new Point(x - p.x, y - p.y);
        }
        
        public void normalize() {
            if (x == 0) {
                y = 1;
                return;
            }
            if (y == 0) {
                x = 1;
                return;
            }
            boolean isMinus = false;
            if (x < 0) {
                x *= -1;
                isMinus ^= true;
            }
            if (y < 0) {
                y *= -1;
                isMinus ^= true;
            }
            int gcd = getGCD(x, y);
            x /= gcd;
            y /= gcd;
            if (isMinus) {
                y *= -1;
            }
        }
        
        private int getGCD(int a, int b) {
            if (a % b == 0) {
                return b;
            } else {
                return getGCD(b, a % b);
            }
        }
        
        public int hashCode() {
            return x + y;
        }
        
        public boolean equals(Object o) {
            Point p = (Point)o;
            return p.x == x && p.y == y;
        }
        
        public String toString() {
            return x + ":" + y;
        }
    }
}