Each division will contain 6 problems, and you will have 2.5 hours to solve them. There might be interactive problems, feel free to learn about them here. The problems were created by 265918, Ari, Kuroni, gamegame, and hugopm.
Now, here are some people I would love to mention:
Thank you isaf27 for being a super helpful, diligent, and humorous coordinator ヽ(〃･ω･)ﾉ
Thanks to Sofie_Ever, mcfr, MathisHammel, thenymphsofdelphi, neko_nyaaaaaaaaaaaaaaaaa, Endagorion, bjn, Capricornmean, xuanquang1999, Jefe, low_, ngkan, pandourson, mth1908, toshinaritong, EPN, zscoder, minhducsun2002, Zorglub, 300iq, Noam527, Akikaze, paquechee, and MofK for testing and giving feedback as well as suggestions to the rounds.
Thanks to MikeMirzayanov for the wonderful Codeforces and Polygon systems that made this contest possible.
The statements were made as clear as possible for your best experiences. Moreover, we sneakily included a theme in the problemset, and each problem will have an easter egg that is the clue to the theme. If you have AC'd every problem, be sure to search for the theme（*´▽｀*)
Additionally, most of us are in a Discord server dedicated to competitive programming called "AC" (this is also the motto of this contest). We will be on the server after the contest to discuss the problems with you. You can find the server here!
I wish you all have good luck and high ratings ( ´ ▽ ` )ﾉ
UPD1: Here is the score distribution:
Div. 2: 500 1000 1500 2000 2750 3000
Div. 1: 500 1000 1750 2500 3000 3250
UPD2: Here is the editorial, including easter egg solutions!
UPD3: Thank you everyone for participating :D Here are the final standings:
Thank you everyone and I hope to see you again!