n = int(input())
info = [list(map(int, input().split())) for i in range(n)]

ans = 0
for i in range(n):
    x1, y1 = info[i]
    for j in range(i + 1, n):
        x2, y2 = info[j]
        tmp = 0
        for k in range(n):
            x, y = info[k]
            if (x2 - x1) * y == (y2 - y1) * x - x1 * y2 + x2 * y1:
                tmp += 1
        ans = max(ans, tmp)
print(ans)