import itertools
from collections import Counter
from fractions import Fraction
from math import isqrt

N = int(input())
P = [tuple(map(int, input().split())) for _ in range(N)]
ct = []
for (x0, y0), (x1, y1) in itertools.combinations(P, 2):
    if x0 != x1:
        d = Fraction(y1 - y0, x1 - x0)
        c = y0 - x0 * d
    else:
        d = float('inf')
        c = x0
    ct.append((c,d))
ct = Counter(ct)
M=max(ct.values())
print(isqrt(M * 2) + 1)