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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
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Hello!
I invite you all to take part in significant round! Today will be the first round for second division in Codeforces history, when it will be rated for blue coders!
This time the problems are written by me and sdya.
We thank Artem Rakhov, Maria Belova and Dmitry Matov for help in preparing of this round.
Good luck for all!
UPD #2: Link to editorial.
Announcement of Codeforces Beta Round 61 (Div. 2)
Last night I don’t want to sleep, so – I was working. I reread my old post "Contribution 2.0" (in Russian) and decided to implement some ideas. Taking into account the comments that everyone (no matter the color nor the position in the contribution) has the right to express their opinions in the form of pluses or minuses, I did not restrict users the opportunity to express opinion.
On the other hand, the rules of contribution changing depending on your votes have modified. Since we have already appeared bots, trolls and other vermin, I will not reveal details, but note that:
- Contribution may change after some time after the processing of your vote - it is normal.
- Not all your votes may be taken into account when calculating the contribution changing - this is also normal, we will defend ourselves from dirty tricks.
- contribution slightly scaled - the numbers got bigger. Maybe it's nicer?
Just want to say that the bots usage, following the principles of "blood feuds," etc. serve as a reason for your disqualification. Do not tempt fate.
Soon, the problems coordinator, the user RAD will leave official lists of both contributions and rated, as he is active member of the Codeforces team.
I wish you high contribution
MikeMirzayanov
I'm glad to invite everybody to take part in the current round.
Today the problems' author is me. I with Artem Rakhov, Maria Belova and Dmitry Matov have tried to do everything possible to make problems more reliable.
I hope that the problems will be interesing for you, the contest will be dinamical, and stronger competitors will cope with the problems quickly to help newcomers to catch all bugs by their hacks :)
Good luck!
P.S. The phrase "stronger competitors will cope with the problems quickly" in no way means that all the problems will be easy. Don't forget to read statements and to test your solutions!
UPD. The contest is over. Congratulations to the winner - Kenny_HORROR!
UPD2. Tutorial is added. In spite of the record number of participants the system has been working stable during the round. Thanks to Codeforces team! Also thanks to everyone who took part in the round.
Announcement of Codeforces Beta Round 60
After analyzing the Division 2 rounds results and the difficulty of the problems, we decided to expand it Division 2 and to include the "blue" participants. Thus, the second division will consist of members with a rating from 0 to 1649.
This is primarily due to the fact that I think the problems from the second division rounds are interesting and useful to the "blue" participants. At these competitions, we often give training problems on common themes of sports programming. In addition, it is seen that in order to be blue enough to solve 1-2 problems on the first division competitions. This leads to the fact that such members do not increase their skills.
Note that we are considering the possibility to divide "yellow" the participants into two colors, since this group is very huge and contains members of widely differing skills and abilities.
UPD. The yellow group was separated into two groups: violet and orange. It is testing period now, some more changes are possible. Rating graphs will be updated tomorrow.
Wish high ratings,
MikeMirzayanov
Announcement of Codeforces Beta Round 59 (Div. 2)
Good evening!
Glad to see you at the 58-th beta round. Problems for today's contest are prepared by Orel STU and NNSU teams.
Good luck everyone!
Unfortunately, statement of problem A was incorrect in English. Russian statement was OK. I'm sorry for this mistake.
Results and ratings were updated.
Thanks for everybody who solve this contest!
Announcement of Codeforces Beta Round 58
Hello!
I am glad to invite you to participate in Codeforces Beta Round #57 (Div. 2).
Today's Contest was prepared by Amir Goharshady and Me.
We are thankful to Mike Mirzayanov , Artem Rakhov , Gerald Agapov , Mohammad Javad Naderi , Saeed Ilchi and Maria Belova.
Today's contest is dedicated to Khaje Nasir Tusi (Great Persian mathematician) since today is the national day of engineering in Iran.
Today for the first time in Codeforces we have Persian statements available for download.
You can download PDF version of statement from this link when the contest starts:
Persian
Have a good contest.
Alireza Farhadi and Amir Goharshady
I am glad to invite you to participate in Codeforces Beta Round #57 (Div. 2).
Today's Contest was prepared by Amir Goharshady and Me.
We are thankful to Mike Mirzayanov , Artem Rakhov , Gerald Agapov , Mohammad Javad Naderi , Saeed Ilchi and Maria Belova.
Today's contest is dedicated to Khaje Nasir Tusi (Great Persian mathematician) since today is the national day of engineering in Iran.
You can download PDF version of statement from this link when the contest starts:
Persian
Have a good contest.
Alireza Farhadi and Amir Goharshady
Hello!
The pilot Unknown Language Round #1 will take place soon (Monday, 21 February). It will be the usual ACM-ICPC unrated contest. The only feature - you will be able to submit problems using the only one, not very popular language. What? It's a secret!
MikeMirzayanov
UPD: The language annoncement will be available about 5 minutes before the contest.
The contest language is Tcl. Tcl (originally from "Tool Command Language", but conventionally rendered as "Tcl" rather than "TCL"; pronounced as "tickle" or "tee-see-ell") is a scripting language created by John Ousterhout (from Wikipedia article). Here is the sample program which reads and writes a single integer number:
set line [gets stdin]<br> scan $line "%d" n<br> puts $nYou may use "Custom Test" feature (see contest user interface) to run your programs.
UPD: The contest is over: final standings link. Do you like the contest?
Announcement of Unknown Language Round 1
Hi, all!
I'm the author of today's contest. On today's contest you will meet with a big amount of funny persons (or not only persons; :-)!), who had problems, and you should try to help them.
This Round was prepared with help of Rakhov Artem and Maria Belova.
I wish you high ratings!
Announcement of Codeforces Beta Round 56
Codeforces (c) Copyright 2010-2024 Mike Mirzayanov
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