import sys
from math import gcd

file_in = "input.txt"
file_out = "output.txt"
sys.stdin = open(file_in, 'r')
sys.stdout = open(file_out, 'w')
n = int(input())
points = []
max_points = 1
for i in range(n):
    x, y = map(int, input().split())
    points.append((x, y))
for i in range(n-1):
    slopes = {}
    tmp_max = 1
    x1, y1 = points[i]
    for j in range(i+1, n):
        x2, y2 = points[j]
        dx, dy = x2 - x1, y2 - y1
        _gcd = gcd(dx, dy)
        dx //= _gcd
        dy //= _gcd
        if dx < 0:
            dx = -dx
            dy = -dy
        elif dx == 0 and dy < 0:
            dy = -dy
        if not slopes.get((dx, dy)):
            slopes[(dx, dy)] = 1
        slopes[(dx, dy)] += 1
        tmp_max = max(tmp_max, slopes[(dx, dy)])
    max_points = max(tmp_max, max_points)
print(max_points)