N = int(input())
zahyo = [tuple(map(int, input().split())) for _ in range(N)]

def check(x1, y1, x2, y2, x3, y3):
    return (y3 - y1)*(x1 - x2) - (y1 - y2)*(x3 - x1) == 0

ansl = []
for i in range(N):
    x1, y1 = zahyo[i]
    for j in range(i + 1, N):
        x2, y2 = zahyo[j]

        res = 2
        for k in range(j + 1, N):
            x3, y3 = zahyo[k]
            if check(x1, y1, x2, y2, x3, y3):
                res += 1
        ansl.append(res)

print(max(ansl))