Hi all,

This is one of the problems from a hiring contest which is now over. Can someone help me in this?

Given $$$N$$$ lines, no 2 lines are collinear/parallel, none of the lines is parallel to y-axis and atmost 2 lines can intersect at a point. Clearly, these lines divide the 2-D plane into various regions. Given a single point $$$P$$$, determine the region where it belongs to.

I don't have any sample or constraints on $$$N$$$. I wrote some $$$O(N^2)$$$ solution(wrong) and it wasn't giving TLE. The only thing I could figure out after the contest was this. Can someone provide an easy and efficient solution?