Vote for Best Codechef Problems of 2016


  1. ASTRD : interesting 3D geometry problem with a simple but nice insight
  2. QUEHEA : seemed difficult at the first sight but got simpler after analyzing behavior of graph
  3. LCPMAX : nice variation of string hashing

  1. AMAEXPER : Nice tree problem
  2. SHAIKHGN : Taught me optimization


1.BGQRS : Taught me how segment tree works but I still struggle with this


I will uptove ASTRD. And further throw in MGCHGEOM because I learned way too much while working on this and spent pretty much the entirety of 3 days on it. TULIPS was another one that took a long time but again taught me a lot.


Thumbs Up if you want more of such initiatives.

I would Love to see Best Problems to solve to clear your concept of a specific topic

  1. [POLYEVAL][1]
  2. [FRIEMEET][2]
  3. [KIRLAB][3]

PS: Unable to edit!


I voted for the following 3 problems (for the following reasons):

  • CHNBGMT: I learnt a new lemma which was needed in order to solve this problem 100%.
  • CHEFPOL: It seemed hard when I first looked at it, but the code ended up being so short and easy to write.
  • BOUNCE: Hard number theory problem; even after having the right idea, I had to do lots of algorithmic and low-level optimizations to make my solution run in time (sadly there’s no editorial for it, yet).

PS: I already edited the question to assign votes to these problems.


Help me with Karma, I can’t ask questions… Pretty please with a cherry on top :wink:


@pkacprzak Thanks for making such discussion! I really learned new approach and strategy from these up voted problems.


Great! Can you add them to the list as I suggested in the rules? That way we can keep it up to date.


can you add it to the problem list above by editing it?


can you add them to the problem list above by editing it?


I am not getting the option to do that


Can’t figure out how to edit this ? Can you help me


+1 for ASTRD :slight_smile:


I am unable to locate the option to edit the post. A little help? :slight_smile:


@pkacprzak, as far as I remember only the author or someone with more than 1.5/2k karma points only can edit the wiki post and for others, even the “Edit” button is not available


@likecs and others, so maybe its better if I remove community wiki tag and keep the list updated by myself?


@pkacprzak, maybe removing the wiki tag may be of no use. By the way, I may also help in maintaining this list as I can see the “Edit” button :slight_smile:


@likecs ok, great, just be careful not to double-count votes :slight_smile: