Hi everyone! I have interesting idea to improve hack system on this site. As you can see, many people write code with too much commented lines and also with no spaces. This is not against the rules, but such code is very annoying to read.

My idea: add "Use autoformatting" and "Remove comments" options in hacking interface. First will format code to satisfy some popular code style, and you understood what the second flag does. It will make reading and analyzing participants' code much easier and more people will enjoy it!

I hope, admins will think about that suggestion.

Hi, Codeforces! Today i wrote div3 round and i really enjoyed it!

Problem A, B and C were quite easy and not very hard to write. Task D was easy to solve too, but I made some stupid mistakes and sent two failed submissions.

Other problems also were enjoyable. Interesting idea of keeping first and last chars in E and searching for answer in G are good for div3 rounds in my opinion.

In conclusion, that round was very good and I'm already waiting for next div3 round to make even better performance.