Codeforces Global Round 12

Revision en5, by 1-gon, 2020-12-06 20:42:53

¡Buenos días! (That's Spanish for "what's up homies")

On Dec/06/2020 17:35 (Moscow time) we will host Codeforces Global Round 12.

It is the sixth round of a 2020 series of Codeforces Global Rounds. The rounds are open and rated for everybody.

The prizes for this round:

  • 30 best participants get a t-shirt.
  • 20 t-shirts are randomly distributed among those with ranks between 31 and 500, inclusive.

The prizes for the 6-round series in 2020:

  • In each round top-100 participants get points according to the table.
  • The final result for each participant is equal to the sum of points he gets in the four rounds he placed the highest.
  • The best 20 participants over all series get sweatshirts and place certificates.

Thanks to XTX, which in 2020 supported the global rounds initiative!

The problems were written and prepared by smart Cuban Devil and stupid Americans fivefourthreeone and 1-gon.

We would like to distribute our thanks equally to the following people who made this round possible.

You will have 3 hours to solve 8 problems (and 2 subtasks). If you want to lose rating, then we encourage you not to read all the problems.

May rating be distributed from each according to his ability, to each according to his needs!

UPD: Here's the score distribution. Good luck, have fun!


UPD: Hope you enjoyed the problems! Editorial is posted.

Tags codeforces global rounds, global round 12


  Rev. Lang. By When Δ Comment
en6 English 1-gon 2020-12-06 22:20:02 359
en5 English 1-gon 2020-12-06 20:42:53 107
en4 English 1-gon 2020-12-06 15:58:44 122 Tiny change: 'tribution.\n\n$$500-' -> 'tribution. Good luck, have fun!\n\n$$500-'
en3 English 1-gon 2020-12-05 06:58:02 50 Tiny change: '020-12-02] for test' -> '020-12-02], [user:ffao], [user:Kuroni] for test'
en2 English 1-gon 2020-12-03 01:50:33 53 Tiny change: '\n- [user:' -> '\n- [user:antontrygubO_o] for inspiration!\n- [user:' (published)
en1 English 1-gon 2020-12-02 20:45:46 2353 Initial revision (saved to drafts)