Codeforces Round #515 (Div. 3)

Revision en7, by MikeMirzayanov, 2018-10-12 12:21:51

After the long delay (disease, conference and many other things) the new Div.3 round is coming!



Codeforces Round #515 (Div. 3) will start at Oct/12/2018 17:35 (Moscow time). You will be offered 6 or 7 problems with expected difficulties to compose an interesting competition for participants with ratings up to 1600. Probably, participants from the first division will not be at all interested by this problems. And for 1600-1899 the problems will be too easy. However, all of you who wish to take part and have rating 1600 or higher, can register for the round unofficially.

The round will be hosted by rules of educational rounds (extended ACM-ICPC). Thus, during the round, solutions will be judged on preliminary tests, and after the round it will be a 12-hour phase of open hacks. I tried to make strong tests — just like you will be upset if many solutions fail after the contest is over. You will be given 6 or 7 problems and 2 hours to solve them.

Note that the penalty for the wrong submission in this round (and the following Div. 3 rounds) is 10 minutes.

Remember that only the trusted participants of the third division will be included in the official standings table. As it is written by link, this is a compulsory measure for combating unsporting behavior. To qualify as a trusted participants of the third division, you must:

  • take part in at least two rated rounds (and solve at least one problem in each of them),
  • do not have a point of 1900 or higher in the rating.

Regardless of whether you are a trusted participant of the third division or not, if your rating is less than 1600, then the round will be rated for you.

Thanks to MikeMirzayanov for the platform, help with ideas for problems and for coordination of my work. Thanks to my good friends Mikhail PikMike Piklyaev, Maksim Ne0n25 Mescheryakov and Ivan BledDest Androsov for help in round preparation and testing the round.

Good luck!

I also would like to say that participants who will submit wrong solutions on purpose and hack them afterwards (example) will not be shown in the hacking leaders table.


I also would like to thank arsijo, Decibit, PrianishnikovaRina and lng11 for help with the preparation and testing the round!

Tags codeforces, 515, third division


  Rev. Lang. By When Δ Comment
en11 English Vovuh 2018-10-13 17:51:05 2547
ru10 Russian Vovuh 2018-10-13 17:50:28 2531
en10 English Vovuh 2018-10-13 00:42:36 83
ru9 Russian Vovuh 2018-10-13 00:42:13 75 Мелкая правка: '.\n\n**UPD**: [Разбо' -> '.\n\n**UPD2**: [Разбо'
ru8 Russian Vovuh 2018-10-12 16:01:49 7 Мелкая правка: 'n**UPD**: UPD 2: Жду всех' -> 'n**UPD**: Жду всех'
en9 English Vovuh 2018-10-12 16:01:32 7 Tiny change: 'n**UPD**: UPD 2: I'll be ' -> 'n**UPD**: I'll be '
en8 English Vovuh 2018-10-12 15:59:48 153
ru7 Russian Vovuh 2018-10-12 15:58:46 149
ru6 Russian MikeMirzayanov 2018-10-12 12:22:07 9 Мелкая правка: 'теста.\n\nВам бу' -> 'теста.\n\n[cut]\n\nВам бу'
en7 English MikeMirzayanov 2018-10-12 12:21:51 9 Tiny change: ' over.\n\nYou wi' -> ' over.\n\n[cut]\n\nYou wi'
en6 English Vovuh 2018-10-12 12:19:46 33
ru5 Russian Vovuh 2018-10-12 12:19:26 29
en5 English Vovuh 2018-10-12 11:50:21 2 Tiny change: 'rt&gt;\n\ni also woul' -> 'rt&gt;\n\nI also woul'
en4 English Vovuh 2018-10-12 11:50:04 176
ru4 Russian Vovuh 2018-10-12 11:48:55 154
ru3 Russian Vovuh 2018-10-11 19:03:16 16
en3 English Vovuh 2018-10-11 19:02:34 22
en2 English Vovuh 2018-10-11 18:56:11 0 (published)
ru2 Russian Vovuh 2018-10-11 18:56:05 99 (опубликовано)
en1 English Vovuh 2018-10-11 18:54:46 2380 Initial revision for English translation (saved to drafts)
ru1 Russian Vovuh 2018-10-11 18:52:56 2255 Первая редакция (сохранено в черновиках)