OJ Board

I am getting WA in this problem. I am using O( n^2 logn ) algorithm for solving this problem. I use STL set to take care of the multiple instance of a set. Can anyone give me some tricky input output ? I use EPSILON = 1e-7 to check the equality of two doubles.

Please help me in this. If any one wants i can post the source code here ...
Thank you
COOLGUY >>>>>>>>>>>>>>>>>

i found the bug..please ignore my previous post.
thank you

I'm getting WA too, i'm sorting and removing duplicates in linear time, them applying the naive method of finding the maximum points in a line since N is small (<= 100), I'm using an epsilon of 1e-7 too, if someone can point common flaws or some input that'd be great.

Thanks in advance
EDIT nevermind, i was using abs instead of fabs

Instead of using EPS, it's easier to just convert to integer
coordinates by multiplying by 100.