import sys
import numpy as np

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

N = int(readline())
XY = np.array(read().split(), np.int32)
X = XY[::2]
Y = XY[1::2]

a = np.subtract.outer(Y, Y)
b = -np.subtract.outer(X, X)
c = a * X + b * Y

a = a.ravel()
b = b.ravel()
c = c.ravel()
ind = ~((a == 0) & (b == 0))
a = a[ind]
b = b[ind]
c = c[ind]

on_line = np.multiply.outer(a, X) + np.multiply.outer(b, Y) - c[:,None] == 0

cnt = on_line.sum(axis=1)
print(cnt.max())