def main():
    n = int(input())
    points = [list(map(int, input().split())) for _ in range(n)]

    mx = 0
    for i in range(n):
        for j in range(i + 1, n):
            x1, y1 = points[i]
            x2, y2 = points[j]
            cnt = 0
            for k in range(j + 1, n):
                x, y = points[k]
                if (x - x2) * (y2 - y1) == (x2 - x1) * (y - y2):
                    cnt += 1
            mx = max(mx, cnt)

    ans = mx + 2
    print(ans)


if __name__ == "__main__":
    main()