Hello,

Another contest from Samara reached Codeforces Gyms. It will be held on Saturday, November 5, at 10:00 MSK. Please don't participate if you know the problems.

And as usual,

Welcome to 2016-2017 CT S03E08: Codeforces Trainings Season 3 Episode 8 - 2005-2006 ACM-ICPC, Tokyo Regional Contest + 2010 Google Code Jam Qualification Round (CGJ 10, Q). The training duration is 5 hours. It is opened for teams as well as for individual participants. After the end you may use the practice mode to complete problem solving. Also it will be available as a virtual contest for whose of you who can't take part today. Please, do not cheat. Only fair play!

Visit Codeforces::Gym to find the contest and register.

We are planning to start on November 2, 2016 13:10 (UTC).

It is possible that the problems will be too easy for some participants, it is possible that we will add some problems.

Good luck!

Hello!

Next Codeforces round #378 for participants from the second division will take place on October 31, 2016 at 17:05 MSK(Moscow time). Traditionally, participants from the first division are able to participate out of the contest.

This round will be unusual:participants will be given six problems and two and a half hours to solve these problems. Pay attention to the unusual time of the beginning of a round!

I want to thank Nikolay Kalinin (KAN) for help with preparation of this round, Tatiana Semenova (Tatiana_S) for translation of statements and Mike Mirzayanov (MikeMirzayanov) for great Codeforces and Polygon systems and also for the help in preparation of a contest and the ideas for several tasks.

It is my first round and I hope you will appreciate it.

The scoring is 500-1000-2000-2000-2750-3000.

Congrats to the winners!

Div. 2

1. Abdelfatah_Elsisi

2. knp

3. ahihi_do_ngok

4. Thaddeus

5. miagkov

6. mayuntao

7. __0v0__

8. den2204

9. CorrelationDecay

10. goodthingstaketime_._

Div. 1

1. uwi

2. dreamoon_love_AA

3. netman

4. MrDindows

5. arsijo

Editorial

Welcome to 2016-2017 CT S03E07: Codeforces Trainings Season 3 Episode 7 - HackerEarth Problems Compilation. The training duration is 5 hours. It is opened for teams as well as for individual participants. After the end you may use the practice mode to complete problem solving. Also it will be available as a virtual contest for whose of you who can't take part today. Please, do not cheat. Only fair play!

Many thanks to Errichto for the preparation of the training. He has saved me!

Visit Codeforces::Gym to find the contest and register.

We are planning to start on October, 26, 2016 13:10 (UTC).

It is possible that the problems will be too easy for some participants, it is possible that we will add some problems.

Good luck!

UPD: The training is over. Many thank to HackerEarth for problems! Undoubtedly Errichto is my hero of the day — he've prepared the training! Special thanks to the problem writers.

The editorial is in the comment http://mirror.codeforces.com/blog/entry/47985?#comment-322692

Today 2016-2017 ACM-ICPC, NEERC, Southern Subregional Contest will be held. On behalf of jury and hosts I wish teams to make happy their coaches!

You can watch the results by the link https://contest.sgu.ru/monitor/1.

And on Sunday (October, 23) on 08:00 (UTC) we will host unofficial online mirror. Interesting problems are waiting for you. Judges tried to prepare problems of wide difficulty range: for newcomers and for expirienced teams. This will be a team/personal contest on Codeforces, with teams consisting of up to three people or individual participants. The contest will not affect Codeforces ratings.

For sure, it will be unrated contest. We recommend you to take part in teams. I think, the contest will be moved to Gym later.

Good luck!

MikeMirzayanov, head of judges.

Hi Codeforces,

I'm excited to announce the Canada Cup, the first Codeforces contest to be sponsored by Diagram!

This is a rated Codeforces round (with T-shirts!) for both divisions which will take place on October 22 at 11:00am EDT.

Although the contest is organized in Canada, all competitors worldwide will be able to compete and win prizes.

The problems for this round were written me (zxqfl) and the Codeforces team. I'd like to thank:

• My coauthors for contributing great problems to the round
• GlebsHP for his help in preparation
• MikeMirzayanov for creating Codeforces and Polygon
• Tatiana_S for translation into Russian

I'd also like to thank Diagram for sponsoring the round. Diagram is interested in hiring software engineers, so please take a look at the information at the end of this post if you're interested. For anyone outside of Canada, they'd like me to let you know that Canada has friendly immigration policies for software engineers.

Both divisions will compete in the same contest, which will consist of 7 problems of the same difficulty level as a regular Codeforces round. The contest will last for 2.5 hours.

The score distribution will, of course, be announced later.

Here is some information from the round sponsor:

Prizes

• The top 100 competitors will get a Diagram T-shirt.
• Local winners (Montreal): Dinner with Francois Lafortune (CEO, Diagram), founders of Dialogue, and other Montreal technologists
• Local winners (Toronto): Dinner with Karel Vuong (Director, Diagram), founders of Collage, and other Toronto technologists

About Diagram

Diagram is a venture launchpad building the next generation of Canadian-based global technology companies. By assembling teams of world-class founders pursuing big ideas for innovation in the financial and insurance industries, and surrounding them with capital, expertise, and infrastructure, they are betting big on their companies and equipping them with everything they need to innovate and build a better future.

Diagram’s investment portfolio includes the companies featured below and they all work with teams that leverage modern frameworks, cutting edge technology, and complex algorithms to deliver wellness and prosperity to all.

Diagram's Investment Portfolio

Collage is re-inventing the way Canadian businesses manage HR, payroll, and benefits. By offering a 100% free and comprehensive platform, Collage automates paper-based and manual business processes and HR administration in ways that are efficient and secure at scale, enabling companies to spend their time on the more meaningful aspects of business.

Dialogue is the best part of your company's health plan. By offering a range of healthcare services for your team, Dialogue helps to keep them happy, healthy, and performing at their highest potential. Dialogue is using machine learning, natural language processing, and AI to process text conversations, video interactions, and imagery sent from patients to their chatbot in real-time to provide accurate diagnoses of physical and mental health concerns.

Applying to Diagram

For those interested in an opportunity with Diagram or any our portfolio companies, please apply here.

UPD Scoring distribution is 500 — 1000 — 1500 — 2250 — 2500 — 3250 — 3500.

UPD The contest is over! Congratulations to the top 5:

1. eatmore
2. paulwang
3. zemen
4. mnbvmar
5. riadwaw

If you won a prize, you'll be contacted soon.

UPD Editorial: http://mirror.codeforces.com/blog/entry/47974

Hello, Codeforces!

Today, 17th of October at 17:35 MSK Codeforces Round #377 for second division participants will take place. As usual, first division participants are able to participate out of rating.

The round problems are taken from the problemset of regional stage of the All-Russian school team programming olympiad which was taking place yesterday in Saratov. The problemset for onsite competition was invented and prepared by Mike MikeMirzayanov Mirzayanov, Ilya IlyaLos Los, Danil danilka.pro Sagunov, Vladimir vovuh Petrov and Roman Roms Glazov. We are thankful for pre-solving competition problems to many of Saratov State U teams' participants. One problem in the round will have a bit harder version than at the competition.

Nikolay KAN Kalinin and Tatyana Tatiana_S Semenova helped us preparing problems and translating for the round — thank you! Thanks to Mike MikeMirzayanov Mirzayanov for the Codeforces and Polygon systems.

There will be 6 problems and 2 and a half hours to solve them at the round. We wish you the best luck!

If you are a participant of the yesterday competition in Saratov, please, do not register for the round and do not participate in it, also do not discuss the problems before the round ends.

UPD Scoring: 500-1000-1500-2000-2000-2500

UPD2

Congratulations to the winners!

Div.2

1. gxgod

2. FizzyDavicl

3. dothanhlam97

4. ngkan

5. Judy.Hopps

Div.1

1. dreamoon_love_AA

2. kmjp

3. NVAL

4. eddy1021

5. pekempey

As soon as the time of registration to the round was a bit early, there may be some first division participants taking part in a line with a second division participants. There are not many of them, so (and due to technical problems) this will be left as is.

Due to NEERC subregionals in Saratov, rating will be updated tomorrow.

UPD3 Editorial

Hi everybody!

Tomorrow at 09:35 UTC there will be Codeforces Round #376 that is dedicated for the second division. At the same time there will be a Moscow School Team Olympiad, and, as a nice tradition, we bring you a CodeForces round based on its problems. Unfortunately, this time we weren't able to come up with a good problemset for a first division contestants, but, as usual, we invite first division to participate unofficially in this round.

Problems were prepared by timgaripov, platypus179, wilwell, Flyrise, ipavlov and vintage_Vlad_Makeev under my control. We would like to thank members of jury of the Team Olympiad: Endagorion, Helen Andreeva and GlebsHP, who also works as a coordinator from the CodeForces side. Also we are very grateful to MikeMirzayanov for a Polygon system that makes problem preparation and coordination of many involved people much simpler, and for a great CodeForces community that we are all part of.

We suggest you 6 problems for 2 hours. Good luck!

UPD The contest is over, results are final, thanks for participating! The editorial will be published later

UPD2 I'm sorry for an editorial delay. It's finally available here.

Congratulations to contest winners:

1. DmitryBelikov
2. ljsss
3. kehKeLenge
4. dilsonguim
5. UoA_Menma