Editorial of SWERC 2021-2022 Online Mirror

Revision en8, by cip999, 2022-04-24 19:19:27

Hello Codeforces!

Thanks for taking part in the SWERC 2021-2022 mirror. We hope you enjoyed thinking about the problems.

The contest was intended for a wide range of participants. As such, there were "very easy" to "easy" problems (A, M, H) as well as extremely challenging ones (B and J, neither of which appeared in the official contest, together with C). Some problems demanded the knowledge of specific techniques, algorithms or data structures (e.g. E, G, K, J), while others were purely based on insight and deduction (B, D, N).

But without further ado, let's present the editorial!

## Solutions

Solution of Problem A

Statement by dario2994, preparation by dario2994

Solution of Problem B

Statement by Giove, preparation by Giove

Solution of Problem C

Statement by gangsterveggies, preparation by gangsterveggies

Solution of Problem D

Statement by tap_tapii, preparation by tap_tapii

Solution of Problem E

Statement by Petr, preparation by Petr

Solution of Problem F

Statement by Simon, preparation by majk

Solution of Problem G

Statement by cescmentation_folch, preparation by cescmentation_folch

Solution of Problem H

Statement by majk, preparation by majk

Solution of Problem I

Statement by tap_tapii, preparation by gangsterveggies

Solution of Problem J

Statement by Simon, preparation by Simon

Solution of Problem K

Statement by gog.gerard, preparation by gog.gerard

Solution of Problem L

Statement by gog.gerard, preparation by gog.gerard

Solution of Problem M

Statement by cip999, preparation by cip999

Solution of Problem N

Statement by cip999, preparation by Delfad0r

Solution of Problem O

Statement by Simon, preparation by Simon

#### History

Revisions

Rev. Lang. By When Δ Comment
en8 cip999 2022-04-24 19:19:27 0 (published)
en7 cip999 2022-04-24 17:00:02 47
en6 cip999 2022-04-24 10:02:09 750 Tiny change: 'oiler>\n\n<spoiler summary="Implementation">\n</spoiler>\n\n' -> 'oiler>\n\n'
en5 cip999 2022-04-19 22:29:45 0 Tiny change: ' pdf.)\n\n<br>\n' -> ' pdf.)\n\n$$a = 2$$\n\n<br>\n'
en4 cip999 2022-04-19 21:44:26 47
en3 cip999 2022-04-19 21:39:54 280 Tiny change: 'orial:1662]\n</spoil' -> 'orial:1662C]\n</spoil'
en2 cip999 2022-04-19 21:34:44 106
en1 cip999 2022-04-19 18:13:09 3670 Initial revision (saved to drafts)