import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(10 ** 7)

n = int(readline())
xy = [list(map(int, readline().split())) for _ in range(n)]
ans = 1
for i, (x, y) in enumerate(xy):
    for dx, dy in xy[i + 1:]:
        cnt = 1
        for k, (xx, yy) in enumerate(xy):
            if i != k and (x - xx) * (y - dy) == (y - yy) * (x - dx):
                cnt += 1
        ans = max(ans, cnt)
print(ans)