Greetings to the Codeforces community!

Regular Codeforces round #316 for participants from the second division will take place on August 13, 19:30 MSK. Participants from the first division are able to participate out of the contest.

It is my first round on Codeforces. Hope you will enjoy this round.

I want to thank Max Akhmedov (Zlobober) for help with preparation of this round, Maria Belova (Delinur) for translation of statements and Mike Mirzayanov (MikeMirzayanov) for great Codeforces and Polygon systems.

Participants will be given five problems and two hours to solve these problems.

UPD: The score distribution is standard, 500-1000-1500-2000-2500

Good luck!

UPD: Contest is finished. Thank you everyone!

Congratulations to the winners!

UPD Editorial

Hello everyone!

Codeforces Round #315 will take place soon. The authors of this round are students of Ural FU sivukhin and Um_nik. This is our second round. First one was in the black days of Codeforces and we hope that this will not happen again after our round :)

We want to thank Codeforces team for great Codeforces and Polygon platforms and Zlobober for helping us prepare this round.

Good luck!

UPD1:
Score distribution.
div2 : 500-1000-1500-2250-2750
div1 : 500-1000-1500-2250-2500
We strongly recommend you to read all the problems. We try our best to prepare different problems and some problems that hard for us can be easy for you.

UPD2:
Editorial

UPD3:
Congratulations to the winners!

div1:
1. KAN
2. Petr
3. enot110
4. tonyjjw
5. Konijntje

div2:
1. Lost
2. loser21
3. fyiwxp221
4. hqpwca
5. LazyWolfLin

Thank you for participating.

Hello, Codeforces!

5th august 2015 at 19:00 MSK Codeforces Round #Pi will take place for second division participants. Participants from the first division are able to participate out of the contest.

This is my first round on Codeforces. I hope you will enjoy the tasks and this will stimulate me to prepare new rounds! Wish you quick Accepted verdicts and successful hacks.

I want to thank Michael Mirzayanov (MikeMirzayanov) for wonderful platforms Polygon and Codeforces and for help in preparing the tasks, Maxim Akhmedov (Zlobober) for help in contest preparation, Maria Belova for translation statements to english, and also my friends Danil Sagunov (danilka.pro) and Vitaliy Kudasov (kuviman) for solving the tasks.

Participants will be given six tasks and two and the half hours for solving them. Scoring system will be announced closer to round start.

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

UPD Editorial

The registrations before 00:00 have been deleted, because the form didn't support teams. Please, register again if your registration has been affected.

VK Cup 2015 Final Round has ended two days ago. It's very likely that you've seen our previous posts. The last event to happen is online mirror of the final round. It will be held on Thursday, July 30th, at 19:00 Moscow time. Individual contestants as well as teams consisting of two people may participate in this round. Round duration is three hours, problems will be shuffled in comparison with to the original order. Both division participants may take part, but we want to warn 2nd division contestants that problemset may be hard for them. This round is a rated Codeforces round.

Finally, we want to thank all people that made this Championship. Following VK developers, Codeforces team members and the other people suggested their help to us while creating and preparing problems: PavelKunyavskiy, burunduk3, Dmitry_Egorov, Kurpilyansky, dark_ai, MikeMirzayanov, Zlobober, MaximShipko, kuviman, Nickolas, Errichto, sankear и malcolm. We want to thank the people that helped us very much by testing our rounds and giving great advices: winger и AlexFetisov. Also we want to say thank you to all VK members that helped us to run the onsite Finals: burunduk3, Burunduk2, KOTEHOK and many others. Thank to all of them!

Good luck and have fun on our Online Mirror!

UPD: Note that during the round the team is allowed to use only one computer. This means that you may code/use console/succeed in solving problems in any other manner by using only one computer at time. The only thing that is allowed from two computers is reading the statements.

UPD2: Since this is a team contest, specially for your convenience we publish the encryped zip-archive with pdf-statements of problems: vkcup2015-mirror-statements.zip. When round starts, we'll publish a password for it.

UPD3: The round will use the dynamic scoring with 250 points step.

UPD4: Due to technical reasons the round starts at 19:20 Moscow time.

UPD5: Password for statements archive: vkcup4ever. Good luck!

UPD6: Online mirror has ended! Congratulations to winners:

1. rng_58
2. Zenith: I_love_Hoang_Yen, ngfam_kongu
3. OrOrZZZ!: zld3794955, KFDong
4. Petr team: Petr, ilyakor
5. jcvb_matthew99: matthew99, jcvb

Also, my personal respects for a team "Petr team: Petr, ilyakor" for only solution for a problem Е in this mirror, user rng_58 and a team "Excited: YuukaKazami, jqdai0815" for two correct solutions for problem С.

Congratulations to a user rng_58 that showed that a single contestant can compete with teams consisting of two people!

Rating will be updated shortly.

UPD7: Editorial!

Hi everybody!

Yesterday, on July 24th, we started VK Cup 2015 Finals! During the day all participants of the competition successfully went to the St. Petersburg, those who got here earlier enjoyed a great trip over the roofs of this beautiful city. And now we are waiting for a practice round that will happen in a few hours, giving participants an option to test their contest environment and do their best while solving several usual (and not only usual) problems. After the lunch, contestants will compete in the first round of the Finals that is called CodeGame Coding, where they have to write the strategy for a battle wizard.

During today and tomorrow not all of the Codeforces features will be available. On this weekend you may take a rest from writing contests and enjoy the results of the one of the biggest competitions of 2015.

The results of the practice round will be available for spectators by this link. Stay tuned!

Good day for all!

I invite you to participiate in the Codeforces round 313, which is prepeared by me and tunyash. Each of us is prepared four rounds then it is our fifth of ninth round to your notice. I figured out almost all problems (except D div.1), wrote the statements and analysis of all the problems, and tunyash has developed all problems.

Gerald is not coordinator yet and you probobly missed him. In this round you will meet him again and help him in his ordinary life problems.

I want to thank Zlobober, our translator Maria Belova (Delinur) and MikeMirzayanov and all Codeforces team for this platform.

This round will be held in unusual time — 17:00 Moscow Time.

Contest finished! Welcome to editoral:
Short editoral.
Extended editoral.

Div.1 scoring distribution:

500 — 1000 — 1500 — 2250 — 2250

Div.2 scoring distribution:

500 — 1000 — 1500 — 2000 — 2500

I wish you to enjoy solving problems!

Congratulations to winners!

Div. 1:
1. jqdai0815
2. qwerty787788
3. SirShokoladina
4. ainu7
5. Endagorion

Div. 2:
1. goons_will_rule
2. lbn187
3. crawling
4. loveannie
5. Jagabee