EPS = 1e-7

#外積
def OuterProduct(one, two):
	tmp = one.conjugate() * two
	return tmp.imag

#点が直線上にあるか
def IsOnLine(point, begin, end):
	return abs(OuterProduct(begin-point, end-point)) <= EPS

n = int(input())
d = []
for _ in range(n):
	x, y = map(int, input().split())
	d.append(complex(x, y))

ans = 0
for i in range(n):
	for j in range(i+1, n):
		tmp = 0
		for k in range(n):
			tmp += IsOnLine(d[k], d[i], d[j])
		ans = max(ans, tmp)
print(ans)