#!/usr/bin/env pypy3

import fractions
import itertools


def compute(n, points):
    # (slope, intercept)
    usual_lines = dict()
    # x_0
    unusual_lines = dict()
    for (x1, y1), (x2, y2) in itertools.combinations(points, r=2):
        if x1 != x2:
            slope = fractions.Fraction(y1 - y2, x1 - x2)
            intercept = y1 - slope * x1
            usual_lines[(slope, intercept)] = 0
        else:
            unusual_lines[x1] = 0
    for x1, y1 in points:
        for slope, intercept in usual_lines:
            if y1 == slope * x1 + intercept:
                usual_lines[(slope, intercept)] += 1
        for x0 in unusual_lines:
            if x1 == x0:
                unusual_lines[x1] += 1
    res = 0
    if usual_lines:
        res = max(res, max(usual_lines.values()))
    if unusual_lines:
        res = max(res, max(unusual_lines.values()))
    return res


def main():
    n = int(input())
    points = [tuple(int(z) for z in input().split()) for _ in range(n)]
    res = compute(n, points)
    print(res)


if __name__ == "__main__":
    main()