n = int(input())

A = [list(map(int, input().split())) for i in range(n)]
x, y = A[0]
ans = 0
for x, y in A:
    for ax, ay in A:
        if (ax, ay) == (x, y):
            continue
        if ax - x == 0:
            ans = max(ans, sum([1 for xx, yy in A if xx == x]))
            continue
        a = (ay - y) / (ax - x)
        b = y - a * x
        ans = max(
            ans,
            sum([1 for xx, yy in A if a * xx == int(a * xx) and int(a * xx) + b == yy]),
        )
print(ans)