I try to solve different polygons that i feign myself. And everything is OK include some special cases like two equal points or all points in the same line. But when i try to submit solution test number 2 break all my hopes. What is the input data for test 2 and expected answer?

thanks a lot

I have same situation as author. Tried few different approaches - WA #2.
Can we please have the data?)

Thanks in advance

Geometric solution I wrote has the same problem. With pass all of my own tests it got WA on test2. If it could be, please, give me test2 and output for it.