By Jeel_Vaishnav, history, 33 hours ago, In English,

Hi everyone!

I would like to invite you to my second Codeforces round, which I have created with my friends Ashishgup and Vivek1998299.

With that said, I bring to your attention our new Codeforces Round #548 (Div. 2) that will take place on Mar/21/2019 18:35 (Moscow time). If your rating is less than 2100, this round will be rated for you; otherwise, you can participate out of competition.

I would like to thank Ashishgup and Vivek1998299 for their help with preparing problems, V--gLaSsH0ldEr593--V, mohammedehab2002 and Um_nik for testing the problems and _kun_ for coordinating our round. I would also like to thank MikeMirzayanov for the awesome Codeforces and Polygon platforms.

You will be given 6 problems and 2 hours to solve them. Scoring distribution will be announced later.

Good luck! :D

UPD1: Shortly after the contest, we'll be on the community Discord server to discuss the tasks.

UPD2: Score distribution is — 500-1000-1750-2250-2500-3000

UPD3: Editorial

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By MikeMirzayanov, 5 days ago, translation, In English,

Hello, Codeforces!

I am pleased to invite you to Codeforces Round #547 (Div. 3), which will start on Mar/19/2019 17:35 (Moscow time). Everyone whose current rating is strictly less than 1600 is invited to participate officially. All others can take part out of the competition.

It so happened that the schedule of this month is not replete with rounds (coordinators, we hope for you!). Therefore I decided to partially correct the situation. All the problems of this round were invented and prepared by me on the last day of Hello Muscat Programming Bootcamp 2019 and on flights from Muscat to St. Petersburg. I even specially noted the time for preparation: for the current moment (the problems are ready for testing) I spent about 6 hours on their preparation, including inventing some of the problems. I really like working on problems, this is something at the intersection of creativity and programming. I really hope you enjoy the result of my work.



I am in Oman while writing the problems for the round.

The round will be hosted by rules of educational rounds (extended 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 6-8 problems for 2 hours to solve them.

Note that the penalty for incorrect submissions in this round 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.

I hope a little later a list of thanks to testers will appear instead of this paragraph. So far I only plan to give the round to testing. Many thanks to the testers ivan100sic, KrK, Benq, I_love_Tanya_Romanova, nhho! UPD: And extra thanks to more testers Pavs, PikMike, Narts, anon20016, Stresshoover, Ivan19981305.

Good luck on the round
MikeMirzayanov

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By maroonrk, history, 9 hours ago, In English,

Hello everyone!

I have a question. Have you ever participated in a worldwide onsite contest without a US layout keyboard? I've never, but I will!

The upcoming ICPC WF 2019 provides keyboards with Portuguese layout. (source)

Ok, it can happen that US keyboards are not available. For example, in IOI 2016 in Russia, provided keyboards have a Russian layout. However, at that time, participants were able to bring their own keyboards and I was comfortably taking part in the contest.

But in the next ICPC WF, we are not allowed to do that. All we can do is to bring stickers!

I wonder why the organizers made such a decision. I think it's disastrous. Our team practiced very hard with a keyboard with US layout. I'm sure that our (and most of other teams') performance will be affected by this issue. I believe that the organizers should let us bring our own keyboards if they fail to provide US layout keyboards.

How do you think about this issue? I want to hear the community members' opinions (and, if possible, the organizers' opinions).

Thank you in advance.

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By yutaka1999, history, 3 days ago, In English,

Hello Everyone!

Japanese Olympiad in Informatics Spring Camp 2019 will be held from Mar. 19 to Mar. 25.

There will be four online mirror contests during the camp.

The contest duration is 5 hours and there are 3 or 4 problems in each day. Problem statements will be provided both in Japanese and English.

There might be unusual tasks such as output-only tasks, optimization tasks, reactive tasks and communication tasks, just like International Olympiad in Informatics (IOI).

The contest site and registration form will be announced about 30 minutes before the contest.

Details are available in the contest information page.

We welcome all participants. Good luck and have fun!

UPD: The link to the contest page is added.

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By MikeMirzayanov, 36 hours ago, In English,

Thanks for taking part in the round. I hope you enjoyed the round. It happens that the statements were really easy to understand (thanks to testers). We've got only 38 questions during a round!

Tutorial is loading...
Code
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Code
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Code
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Code
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Code
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Code
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Code

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By Ashishgup, history, 4 hours ago, In English,

I hope you guys enjoyed the contest and we hope to host another one soon! The next one will be more balanced :P

With that said, here are the tutorials:

Tutorial is loading...

Author: Ashishgup

C++ Code: 51651509

Java Code: 51651164

Tutorial is loading...

Author: Ashishgup

C++ Code: 51651887

Java Code: 51651375

Tutorial is loading...

Author: Ashishgup

C++ Code: 51652029

Java Code: 51651756

Tutorial is loading...

Author: Vivek1998299

C++ Code (Above Logic): 51652491

C++ Code (Mobius Inversion): 51652104

Tutorial is loading...

Author: Jeel_Vaishnav

Java Code: 51652167

Tutorial is loading...

Author: Jeel_Vaishnav

Java Code: 51652020

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By Errichto, 28 hours ago, In English,

There was a blog that chemthan got hacked, and indeed I got strange messages from his account, asking for help with problems from the next Google Kickstart. The blog is now deleted. It would be nice to hear from some friends of his whether everything is ok now. chemthan1 is allegedly his temporary alt account. Also, ikatanic was mentioned.

I can remove this blog a few days after everything is resolved, if chemthan wishes so.

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By PikMike, history, 17 hours ago, translation, In English,

Hello Codeforces!

On Mar/22/2019 18:05 (Moscow time) Educational Codeforces Round 62 (Rated for Div. 2) will start.

Series of Educational Rounds continue being held as Harbour.Space University initiative! You can read the details about the cooperation between Harbour.Space University and Codeforces in the blog post.

This round will be rated for the participants with rating lower than 2100. It will be held on extended ICPC rules. The penalty for each incorrect submission until the submission with a full solution is 10 minutes. After the end of the contest you will have 12 hours to hack any solution you want. You will have access to copy any solution and test it locally.

You will be given 7 problems and 2 hours to solve them.

The problems were invented and prepared by Roman Roms Glazov, Adilbek adedalic Dalabaev, Vladimir Vovuh Petrov, Ivan BledDest Androsov, Maksim Ne0n25 Mescheryakov and me. Also huge thanks to Mike MikeMirzayanov Mirzayanov for great systems Polygon and Codeforces.

Good luck to all participants!

Our friends at Harbour.Space also have a message for you:

Hello Codeforces!

We want to remind you about the two fully funded scholarships we currently have available:

Master’s in Data Science Scholarship & Master’s in Robotics Scholarship

Both scholarship opportunities include: - Full coverage of the Programme’s tuition fee (€23,000 value) - 3 hours of study a day at Harbour.Space University - 4 hours of internship a day with one of our industrial partners - €12,000 euros a year (living allowance)

If you’re interested in applying for the Robotics Scholarship, apply here.

If you want to apply for the Data Science Scholarship, fill out the form below and we will contact you about the next steps.

GO TO FORM

If you need more information about either, please contact us at hello@harbour.space

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By hmehta, history, 2 days ago, In English,

Hi!

Topcoder SRM 753 is scheduled to start at 11:00 UTC -4, March 20, 2019. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins.

Editorials: https://www.topcoder.com/blog/single-round-match-753-editorials/

This is the fifth SRM of Stage 3 of TCO19 Algorithm. This stage will also help you qualify and win reimbursements/tickets to TCO19 Regional Events.

Stage 3 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 754 — March 30

Stage 3 Leaderboard

All the best!

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By Hezaveh, history, 4 hours ago, In English,

I am not Newbie :)

its just for history pls dont dislike me.

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