Rating changes for last rounds are temporarily rolled back. They will be returned soon. ×

Help in Convex Hull Problem
Difference between en1 and en2, changed 4 character(s)
Hello Everyone,↵
I have been trying to solve this problem "Light Oj — 1313" for so long but could not find any solution.↵
I can understand convex hull and point in polygon part than I got stuck every time. Can anybody tell me how to solve this problem. Thank you .

 ↵
problem link : 
[](http://www.aichengxu.com/other/3595766.htm)↵
I am giving this link because you must have an account to open the main problem. 

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en2 English travelers 2018-07-06 20:57:47 4 (published)
en1 English travelers 2018-07-06 20:56:46 444 Initial revision (saved to drafts)