from math import gcd
from collections import defaultdict, Counter

n = int(input())
XY = []
for i in range(n):
    x, y = map(int, input().split())
    XY.append((x, y))


def line_calc(x1, y1, x2, y2):
    return -(y1 - y2), (x1 - x2), y1 * (x1 - x2) - x1 * (y1 - y2)


def check_line(a, b, c, x, y):
    return a * x + b * y == c


if n == 2:
    print(2)
else:
    line = []
    for i in range(n - 1):
        for j in range(i + 1, n):
            x1, y1 = XY[i]
            x2, y2 = XY[j]
            line.append(line_calc(x1, y1, x2, y2))
    ans = 0
    for pair in line:
        cnt = 0
        a, b, c = pair
        for x, y in XY:
            if check_line(a, b, c, x, y):
                cnt += 1
        ans = max(cnt, ans)
    print(ans)