61 人解决，82 人已尝试。
103 份提交通过，共有 266 份提交。
3.8 EMB 奖励。
单点时限: 2.0 sec
内存限制: 256 MB
``How am I ever going to solve this problem?” said the pilot.
Indeed, the pilot was not facing an easy task. She had to drop packages at specific points scattered in a dangerous area. Furthermore, the pilot could only fly over the area once in a straight line, and she had to fly over as many points as possible. All points were given by means of integer coordinates in a two-dimensional space. The pilot wanted to know the largest number of points from the given set that all lie on one line. Can you write a program that calculates this number?
Your program has to be efficient!
The input consists of N pairs of integers, where 1 < N < 700. Each pair of integers is separated by one blank and ended by a new-line character. The list of pairs is ended with an end-of-file character. No pair will occur twice.
The input ends with a case which N is equal to zero
The output consists of one integer representing the largest number of points that all lie on one line.
5 1 1 2 2 3 3 9 10 10 11 0
3
61 人解决，82 人已尝试。
103 份提交通过，共有 266 份提交。
3.8 EMB 奖励。