Screencast & Editorial of A–F in CodeTON Round 6 (Div. 1 + Div. 2)

Revision en4, by orz, 2023-09-19 01:15:14

Today a horrible thing almost happened: I barely stayed an International Grandmaster on Codeforces after participation in CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!). I would't say I was exceptionally slow or that I solved problems too clumsily, but for some reason the majority of participants near my level were faster than me on these problems.

I recorded a five hour long video about my adventures. If you're interested in a particular problem, follow the timecodes:

Problem Solving Implementation Editorial
1870A - МЕХанизированный массив 01:37 02:45 3:23:28
1870B - Дружные массивы 06:23 10:54 3:30:20
1870C - Разноцветная таблица 12:48 14:12 3:41:00
1870D - Покупка префиксов 22:14 24:41 3:58:20
1870E - Очередная задача на MEX 39:37 58:42 4:34:24
1870F - Ленивые числа 1:31:03 2:54:32 2:30:37

If you open a video and see it's low quality, you might want to wait several minutes until YouTube processes the higher resolutions.

UPD. This is high quality now. Please watch!

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en4 English orz 2023-09-19 01:15:14 2
en3 English orz 2023-09-19 00:55:09 52 Tiny change: 'solutions.' -> 'solutions.\n\n**UPD.** This is high quality now. Please watch!'
en2 English orz 2023-09-19 00:07:13 136 (published)
en1 English orz 2023-09-18 23:31:49 2234 Initial revision (saved to drafts)