m3tr0's blog

By m3tr0, 3 days ago, translation, In English

2036A - Quintomania

Idea: m3tr0

Tutorial
Solution (myav)

2036B - Startup

Idea: Seny

Tutorial
Solution (Seny)

2036C - Anya and 1100

Idea: m3tr0

Hint
Tutorial
Solution (m3tr0)

2036D - I Love 1543

Idea: eugenechka.boyko.2_0-0

Tutorial
Solution (m3tr0)

2036E - Reverse the Rivers

Idea: m3tr0

Hint
Tutorial
Solution (m3tr0)

2036F - XORificator 3000

Idea: eugenechka.boyko.2_0-0

Hint 1
Hint 2
Tutorial
Solution (eugenechka.boyko.2_0-0)

2036G - Library of Magic

Idea: m3tr0

Hint 1
Hint 2
Tutorial
Solution (m3tr0)

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By m3tr0, 5 days ago, translation, In English

Hi Codeforces!

We would like to invite you to participate in Codeforces Round 984 (Div. 3) on Nov/02/2024 17:35 (Moscow time). You will be given 7 problems and 2 hours and 15 minutes to solve them. The penalty for an incorrect submission will be 10 minutes. There may be interactive problems in the round.

The round will be ruled according to the standards of educational rounds (extended ICPC). Thus, solutions will be judged on preliminary tests during the round, and after the round, there will be a 12-hour phase of open hacks. After open hacks all accepted solutions will be rejudged on successful hacks. We've tried to make decent tests — just like you, we'll be upset if you have dropped solutions after the end of the contest.

Reminder that only trusted Division 3 competitors will be included in the official results table. This is a forced measure to combat unsportsmanlike behavior. To qualify as a trusted Division 3 competitor, one must:

  • participate in at least five rating rounds (and solve at least one problem in each of them)
  • not have a point 1900 or higher in the rating.

Whether you are a trusted Division 3 participant or not, if your rating is less than 1600, the round for you will be rated.

The tasks were authored and prepared by a team consisting of Seny, eugenechka.boyko.2_0-0 and myself.

The round is based on the recent Lipetsk Team Programming Olympiad for school students. Please note that if you are a participant of the Olympiad, you are not allowed to participate in this round. Thanks to the coordinator of this Olympiad myav and the author Small_machine, whose tasks were not included in this round due to their high complexity.

We thank very much:

We hope you find the problems interesting. Good luck!

UPD.: Editorial

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