Codeforces Round #431

Revision en8, by cyand1317, 2018-03-09 15:01:44

Hi!

I’d like to invite you to Codeforces Round #431 which takes place at 16:35 MSK on 1 September. Please note that the timing is again unusual.

One of the problems is created by adedalic and KAN, while the others are authored by me. This is my second round here, and it couldn’t have been realized without efforts of: AlexFetisov, ifsmirnov, Tommyr7, winger and wu_qing who tested the problems; KAN who appears to be a meticulous guide throughout the preparation process; and MikeMirzayanov with the supercalifragilisticexpialidocious Codeforces and Polygon platforms — my deep gratitude to you!

Both divisions are welcomed as rated contestants and will have five problems to solve in two hours. The scoring will be announced later.

Once upon a time, in a virtual galaxy far, far away, there was a lovely young singer by the name of Hatsune Miku. One lovely day, Miku got a job as a vocalist in Vocaloid, and that was very exciting. People said, “Oh, Miku, you sing so accurately! And so emotive, too!” Soon everyone was talking about Miku, and there were songs and paintings and even live concerts for, and with, Miku. Miku liked that.

And you, are to start a journey following the emotions in Miku’s voice. Oh, by the way, a late Happy Birthday to her — August 31 is (was) her tenth anniversary.

For the world you live in, thank you.

See you then, and wish everyone few bugs and fair ratings.

UPD 1 Scoring will be:

  • 500-1000-1500-2000-2500 for Division 2;
  • 500-1000-1750-1750-2500 for Division 1.

UPD 2 System test is done. Congratulations to the winners!

Division 1

  1. dotorya
  2. Reyna
  3. SkyDec
  4. V--o_o--V
  5. koosaga

Division 2

  1. lmmortalCO (solved all problems!)
  2. ltg2030
  3. FoolMike
  4. HatsuneMiku
  5. MisakaKuma

Also, thanks to all who participated! Nicely done!

Check out the editorial with hints!

UPD 3 Complete tutorials and behind-the-scene fragments are out. Problem packages may be published soon, stay tuned!

Tags 431, announcement, happy birthday

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en8 English cyand1317 2018-03-09 15:01:44 0 (published)
en7 English cyand1317 2018-03-09 14:35:20 62 (saved to drafts)
en6 English cyand1317 2017-09-02 12:53:02 124
en5 English cyand1317 2017-09-01 19:13:06 570 Post-contest update
en4 English cyand1317 2017-09-01 16:37:15 126 Add scoring
en3 English cyand1317 2017-09-01 11:48:40 64 Update testers list
en2 English cyand1317 2017-09-01 01:34:23 34 Add tester winger
en1 English cyand1317 2017-08-31 21:29:48 1579 Initial revision (published)