CodeCraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined) Announcement

Revision en7, by Baba, 2017-01-12 23:06:18

Hello Everyone!

I would like to invite you to CodeCraft-17, which will take place on Thursday 12th January 2017, 9:05PM IST. The round will be a Div1 + Div2 combined round and is rated.

Felicity, IIIT Hyderabad presents Threads ‘17, the magnificent annual technical fest, is finally here in its 13th edition! With a plethora of intellectually engaging online contests in various fields of programming, mathematics and general knowledge, Threads is a celebration of the spirit of computing and engineering. The grand algorithmic sprint called CodeCraft, parallel programming in Kernel Cruise, mathematical enigmas in Gordian Knot, jeopardy style CTF event called Break In, overall Threads '17 has something to offer for every kind of computing enthusiast!

Codecraft Poster

I would like to thank Nikolay Kalinin (KAN) for helping us in preparing the contest,to Mike Mirzayanov (MikeMirzayanov) for the great Codeforces and Polygon platform and the Threads Team for helping in preparation of the problemset.


  • Top 25 participants win Codeforces T-shirts.
  • Additionally, 25 randomly chosen participants from top-500 will also win a Codeforces T-shirt.

You will be given seven problems and three hours to solve them. The scoring distribution will be announced later. Good luck everyone!

UPD: The constraint of registration for eligibility to prizes has been removed. Everyone who participates in the round is eligible for prizes. Sorry for the inconvenience caused!

UPD2: Scoring is 500 — 1000 — 1500 — 2000 — 2500 — 2750 — 3500

The contest has ended. Thank you all for participating. Hope you liked the problems.
It was our first codeforces round and it was really exciting for us to see how the contest progressed!
Editorials and list of T-shirt winners will be published soon.

Congratulations to the winners!

  1. tourist
  2. W4yneb0t
  3. anta
  4. Um_nik
  5. ershov.stanislav
  6. LHiC
  7. jcccccccccccccccccccccsb
  8. GlebsHP
  9. jiry_2
  10. Egor
Tags codecraft, round, 391, announcement, div1 + div2, felicity


  Rev. Lang. By When Δ Comment
en9 English KAN 2017-01-14 13:23:02 180
en8 English Baba 2017-01-13 15:53:29 82
en7 English Baba 2017-01-12 23:06:18 754
en6 English Baba 2017-01-12 18:21:56 8
en5 English Baba 2017-01-12 18:01:54 127
en4 English Baba 2017-01-10 18:17:15 344
en3 English Baba 2017-01-10 01:48:23 15 Tiny change: ' on our w' -> ' on our w'
en2 English Baba 2017-01-09 19:25:46 708 (published)
en1 English Baba 2017-01-09 18:49:38 1492 Initial revision (saved to drafts)