VK Cup 2012 Qualification Round 1
By MikeMirzayanov, 13 years ago, translation, In English

Hi everybody!

Let me remind you that on the 3rd of March, at 20:00 the first qualification round of the VK Cup 2012 championship will start.

You need to participate in at least one qualification round to make it to Round 1. Contestants who gain a score equal to the 800-th place finisher score or greater will advance to the Round 1. If you won't participate in the Qualification Round 1 or if you failed to advance to Round 1 by its results, than that's not a problem — you can have a try at the Qualification Round 2 on March, 9.

At each qualification round you will find a few simple problems, roughly ordered by the increasing complexity. During the qualification rounds the problems are judged only on pretests and system testing will take place after the end of the qualification round (round continues for 24 hours). The pretests do not cover all possible cases of input data, test your programs carefully! The qualification rounds have no hacks or decreasing values of the problems.

The round will last for 24 hours, but it does not mean that we encourage you to spend all this time solving of problems. We hope that most participants will cope with the problems (or with most problems) in a shorter period of time. This duration of the round is chosen so that each participant could find a convenient time to participate.

Before the end of the round it is strictly forbidden to publish the problem statements/solutions/any thoughts and ideas about them elsewhere. It is forbidden to talk about the problems, discuss the statements and so on. Be honest and let the best men make it into Round 1. When the Qualification Round is over, you can discuss the problems and solutions.

You can register for the round at any time up to its end. Yes, we had a false start with registration of the qualification. We haven't switched on the Championship participant registration check function. If someone managed to register to the round on the 2nd of March, please do it again.

The results of the round will not affect the rating, non-competitive participation in the round is not allowed. However, all tasks will go to the archive after the end of the round.

Best of luck and enjoy solving the problems!

UPD: The round is over. 12907 submissions to be judged on system tests!

UPD 2: System testing completed, the final results are available.

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Comments Comments (56)
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13 years ago, # |
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It should be "the 3rd of March". :)

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    13 years ago, # ^ |
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    Fixed, thanks.

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    13 years ago, # ^ |
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    Hi, When I try to send a problem for the VC Cup 2012 contest A message is displayed "You should be registered", however I am registered in the contest...

    Help me!!!

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13 years ago, # |
  Vote: I like it +9 Vote: I do not like it

Will you be allowed to submit multiple times per problem (For example if you find a mistake after submitting or fail pretests) or will you only be granted one submission per problem?

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13 years ago, # |
  Vote: I like it +33 Vote: I do not like it

"VK Cup 2012 Квалификационный раунд 1", there are Russian phrase in the title not translated into English, though I think everybody can guess that it means "Qualification Round 1". :-)

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13 years ago, # |
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Is the championship's time( 3rd of March, at 20:00)common with the time display on computer?

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    13 years ago, # ^ |
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    It's UTC time. You can click on it to see what time will it be in your timezone.

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13 years ago, # |
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can i take part in the contest if my age do not satisfied the restriction?

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13 years ago, # |
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Is the contest rated ?

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13 years ago, # |
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Will the ranking be based of submission time ? (like in normal Codeforces round)

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    13 years ago, # ^ |
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    No for the Qualification Round the value of a question will not decrease.So you can sleep and see the questions in the morning...

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      13 years ago, # ^ |
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      Did you confirm from Admin ?

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        13 years ago, # ^ |
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        Mike Mirzayanov has written it in this blog..You can find that after the table "Qualification Rounds – each round lasts for 24 hours, no hacks are allowed, problems point values don’t depend on submission time (do not reduce over time);"

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      13 years ago, # ^ |
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      It is right

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13 years ago, # |
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Why can't I register for VK Cup 2012 Qualification Round 1 it says: Sorry, only Championship registered users can take part in this round. Please, register in the Championship (if you are eligible) to signup to the round. Well I am new to codeforces.com. Is championship registration closed. register link is red...on vk cup 2012 page

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13 years ago, # |
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May someone not elegible register "out of competition"?

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    13 years ago, # ^ |
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    Not for qualifications. But problems are usually opened to everyone and you can submit solutions after contest's end.

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13 years ago, # |
  Vote: I like it -36 Vote: I do not like it

is it a ratted contest....MikeMirzayanov ????

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13 years ago, # |
← Rev. 2   Vote: I like it +2 Vote: I do not like it

I understand that resubmissions (or failed pretests) do not reduce the point value of the problems either?

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    13 years ago, # ^ |
    ← Rev. 4   Vote: I like it +8 Vote: I do not like it

    You are wrong.
    they do(except 1st test)

    Russian MikeMirzayanov's post

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    13 years ago, # ^ |
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    As MikeMirzayanov answered above, there is penalty for resubmissions and errors on pretests, except failure on first test (even if there are more than one example test) — it's ignored, as usual.

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      13 years ago, # ^ |
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      Thanks, I didn't see that (because Mike's post is only in the Russian version of the comment thread).

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        13 years ago, # ^ |
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        I see. Mike added that penalty is usual — 50 points per resubmission/wrong solution and you cannot be awarded less than 30% of points for correctly solved problem. So, for a solved 1000-points problem you'll always get at least 300 points no matter of penalties.

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13 years ago, # |
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I have registered but it will not let me submit saying I am not registered.

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13 years ago, # |
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I have registered for the competition but I received this error: "You should be registered for the contest to be able to submit". Please help, thanks! :)

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    13 years ago, # ^ |
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    You should register to VK cup (see link on the right side of this page), then register to Qualification round ("Contests" tab). than you'll be able to submit

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13 years ago, # |
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VK Cup 2012 Qualification Round 1 Can we submit if we aren't in the competition? (im too young)

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13 years ago, # |
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i have registered for the contest and even my nick is also there in registered contenstant list, still when i submit it says you are not registered for the competition. Admin plz help..

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    13 years ago, # ^ |
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    Read the comments above

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      13 years ago, # ^ |
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      I still wonder how the names visible in the standings are sorted for same rank. Seems random.

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        13 years ago, # ^ |
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        Maybe by last submission? Any way, it isn't matter. positions are same

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          13 years ago, # ^ |
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          yes. just curious. :)

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13 years ago, # |
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It is interesting whether we will get the testing results soon after the end of the contest... :)

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13 years ago, # |
← Rev. 2   Vote: I like it +9 Vote: I do not like it

when we will could see our final rank ?! :|

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13 years ago, # |
  Vote: I like it -25 Vote: I do not like it

If this contest have hacks was very better. VERY TRICKY PROBLEMS..

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13 years ago, # |
  Vote: I like it -11 Vote: I do not like it

This contest is really important, and 24 hours are given for each contestant so that everybody gets a chance to participate. But I would have liked that after entering the contest each contestant had only had two hours to solve all the problems.

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13 years ago, # |
  Vote: I like it +22 Vote: I do not like it

Exactly 1000 participants advanced. Places from 607 to 1000 all have 4000 points.

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    13 years ago, # ^ |
      Vote: I like it +19 Vote: I do not like it

    Yeah, but anyway I think most people haven't expected that for passing the qualification it is needed to solve first 4 tasks without any wrong attempts.

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      13 years ago, # ^ |
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      The way you see it is that you need to have no mistakes with the first 4 problems to advance. The way I see it is that 374 of the 1000 advancers had at least one wrong answer (pretests failed or resubmission), and the problems weren't that hard, so probably the best idea was trying to use as much time as you need to solve the 5 problems so you can have 40 wrong answers and still advance. (when I say 40 wrong answers is just a number for the statistics, probably nobody solved the 5 problems with so many wrong answers in the pretests). I feel many people were unlucky because they thought that with A, B, C and D and just one wrong answer (216 people in that situation) they weren't going to have problems to advance, but there's still one more qualy and I think it will be easier to advance as many people who advanced today can't participate in that round. My advice to everyone is try to solve all the problems you can solve and don't speculate! I hope that many people get a tied spot with the 800th in next qualy so many people advance to the next round! EDIT: There must have been a resubmition because now there are 1001 advancers

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        13 years ago, # ^ |
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        Strange, number of advanced participants keeps growing, 1006 as of now.

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13 years ago, # |
← Rev. 2   Vote: I like it +64 Vote: I do not like it

Comments with too much negative feedback shouldn't be hidden. It takes more time to show and read it than just to read it. Curiosity (alien guy)

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13 years ago, # |
  Vote: I like it +4 Vote: I do not like it

Any tutorials coming???

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13 years ago, # |
  Vote: I like it +3 Vote: I do not like it

Hi, for the qualification round 2, I wonder if we can participate as out-of-competition participant, as usual? I'd love to participate; it seems like I can't... Maybe I should wait until the competition is over?

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