Codechef June 17 has just finished. After a few months of my inactivity in Codechef Long contests, caused by helping in preparing these contests, I took part in this one.
It turned out to be a fun contest with decent problems. I especially liked CLONEME problem and also ES - I'm not math expert by any means, so I got to put some unusual effort to solve it Challenge problem SABOTEUR was also nice, but I regret I didn't put enough effort there. I also regret not tackling the OAK problem.
I finished 34th, which is my second best result there I think, and this resulted in jumping to the top rank in Poland in the overall ranking. I'll try next month to beat that result.
If you have any questions regarding the problems from the contest or my approaches to them, I'd be happy to answer them.