After quite a pause, I participated in recent Codeforces Global Round 27. After solving A–E in some admissible time but unfortunately struggling for some time with 2035F - Tree Operations, I chose to take the risk and solve the last problem, 2035H - Peak Productivity Forces for which fortunately there was quite much time to sit and figure everything out. Soon it became obvious that it was just a constructive problem without any horrible data structures; one just needs to carefully sort out all cases and not bug a lot. I was very happy to perform it — in these latter days I pretty often feel frustrated that I solve all easy problems (gentleman's set, so to say) but stop at one which is a bit harder, and I seldom am able to solve this one problem (which is usually enough to get a very cool place). Well, today is a nice day!

I explained the problems that I solved right after the screencast itself, you are welcome to watch it: https://youtu.be/WdkTDjb1knw.

UPD: the sound was too quiet, I tried amplifying it: https://youtu.be/jRKJbNO-3kg