Alex_KPR's blog

Codeforces Beta Round #58
By Alex_KPR, 14 years ago, translation, In English
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
  • Vote: I like it
  • +38
  • Vote: I do not like it

Comments Comments (178)
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14 years ago, # |
  Vote: I like it +7 Vote: I do not like it
I don´t get that 3rd example for problem A. Is statement really ok?
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  • 14 years ago, # ^ |
    ← Rev. 2   Vote: I like it +9 Vote: I do not like it
    Unfortunately, sentence "And in addition, no three fingers of the boy shouldn't touch each other" was lost :(
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    • 14 years ago, # ^ |
        Vote: I like it +3 Vote: I do not like it

      Dont worry dude! , The problems were really nice.

      I am waiting for nice editorials . 

      (although I messed up with prob. 1 too!  ;) )

      → Reply
    • 14 years ago, # ^ |
        Vote: I like it +3 Vote: I do not like it
      As for me - good problemset
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    • 14 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it
      I believe your problemset was extremely nice. Good job Alex. I hope to see more contests from you
      → Reply
14 years ago, # |
  Vote: I like it +6 Vote: I do not like it
good luck friends.
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14 years ago, # |
  Vote: I like it +50 Vote: I do not like it
This contest should be unrated. I got 13 hacks just because of the wrong problem statement of A!
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  • 14 years ago, # ^ |
      Vote: I like it +19 Vote: I do not like it
    I agree
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    • 14 years ago, # ^ |
        Vote: I like it +17 Vote: I do not like it
      Agree too!
      → Reply
      • 14 years ago, # ^ |
          Vote: I like it +13 Vote: I do not like it
        Me too
        My solution to A was hacked
        And I got -4 only because of that missing sentence. (I realized it too late)
        And a fellow in my room has 15 successful hacks only for that.
        → Reply
        • 14 years ago, # ^ |
            Vote: I like it -17 Vote: I do not like it
          A lot of hacks was to incorrect reading of statements but not for incorrect statments(but I agree, those hacks was too)
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  • 14 years ago, # ^ |
      Vote: I like it +7 Vote: I do not like it
    Agree
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it +7 Vote: I do not like it
    agree too
    its so unfair :(
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it +4 Vote: I do not like it
    Also , some people locked A and were hacked
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    • 14 years ago, # ^ |
        Vote: I like it +1 Vote: I do not like it
      Same for me, and then I changed my strategy: leave the questions and seek for Hacking.
      But I lost both of them and god crazy, and so ... :D
      → Reply
14 years ago, # |
  Vote: I like it +5 Vote: I do not like it
why the description is so long ... and I always can't understand ...... 囧
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14 years ago, # |
  Vote: I like it +1 Vote: I do not like it
It's taking so long to test on pretests :'(
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14 years ago, # |
  Vote: I like it +2 Vote: I do not like it
Hopefully there will be strong testset for B problem...
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14 years ago, # |
  Vote: I like it +11 Vote: I do not like it
34 hacks in only one room for the missing statement . . . . . . . . . This contest can't be a legal one . . . . . this must be unrated . . . . . .
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  • 14 years ago, # ^ |
      Vote: I like it +1 Vote: I do not like it
    after getting the correction someone locked the wrong one of his one but hacked others. . . . and got so much more point than the problem point
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    there must be some to adjust that ...in ratings...like not rating the first one..and calculating the points for rest of the question , ofcourse reducing the time of contest as well while calculating.

    Lets see what happens.

    → Reply
  • 14 years ago, # ^ |
      Vote: I like it +1 Vote: I do not like it
    I don't agree. If someone chose to sumbit it anyway, he took a risk( 3rd sample should have warned him not do it).
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    As I understood the popup message, you shoudl choose just for yourself. But now I see people posting as it is a poll, non a personal decision.......
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it +5 Vote: I do not like it
    Don't rate!
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it +1 Vote: I do not like it
     i agree , with u mahfuz
    → Reply
14 years ago, # |
  Vote: I like it +10 Vote: I do not like it
don't rate!
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14 years ago, # |
  Vote: I like it +9 Vote: I do not like it
don't rate! [2]
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14 years ago, # |
  Vote: I like it +11 Vote: I do not like it
Does the incorrect statement applies to both languages?

Anyway, I think the problems were fun :D, but their English wordings is rather poor.
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  • 14 years ago, # ^ |
      Vote: I like it +8 Vote: I do not like it
    Russians statement was correct
    → Reply
    • 14 years ago, # ^ |
        Vote: I like it +5 Vote: I do not like it
      This makes it yet more unfair
      → Reply
  • 14 years ago, # ^ |
      Vote: I like it +3 Vote: I do not like it
    Agree, It's so hard to get the meaning.
    I can't understood both the problem C and E.
    → Reply
14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
Problem A statement was not descriptive at all..
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14 years ago, # |
  Vote: I like it +8 Vote: I do not like it
also i think this contest to be unrated 
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
don't rate! some guys concentrated on hacking A than solving problems & got to much points than others who solved 2/3 problems & didn't hack.
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    A lot of hacks was to incorrect reading statements,but not for incorrect statements.

    For example, all my hacks and my first error was same
    → Reply
14 years ago, # |
  Vote: I like it +2 Vote: I do not like it

Can anyone suggest some website to learn Russian .

It would have helped me today . 

And is it tough ?

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14 years ago, # |
  Vote: I like it +1 Vote: I do not like it
My solution to problem B was hacked. The test file was like that:
1 50000
ababababababab...

Is that really correct from a problem statement?? My program got TLE on this hack because it was expecting an additional one non-empty line.

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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    Same with me!
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    Probably, the test case is just displayed truncated to you, but it actually contains three lines.
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    • 14 years ago, # ^ |
        Vote: I like it +1 Vote: I do not like it
      Well, then I would like to see them... Because I think that O(nlogn) is enough there...
      → Reply
  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    i have the same problem!!

    Is that really correct from a problem statement??
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    There was one..
    Mine generator has made
    1 50000
    abab...
    baba... (150000 symbols)
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    • 14 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it
      Oh, my bad... The array for a line was too small.
      Thank you for the reply :)

      However, the future codeforces system should write tests in the form you have written in your comment.
      → Reply
14 years ago, # |
  Vote: I like it +11 Vote: I do not like it
There are so many confusions, in fact...
For example,
"That is, they are comfortable when between any two girl's fingers there is a boy's finger."

I believed that the boy can't put more than one fingers because of this statement...
Maybe it should be "at least one finger"?
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    Correct! , Because of that I made mistake!!  


    → Reply
  • 14 years ago, # ^ |
      Vote: I like it +1 Vote: I do not like it
    Exactly!

    I lost two submissions and got hacked because of that.

    Problem statement is a complete disaster. Author of this problem is the only person who knows about martian physiology.
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    I don't see any confusion in this statement. There is no words "only one boy's finger", so except one boy finger there maybe other fingers, even not only that Marsian boy's :)
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    • 14 years ago, # ^ |
      ← Rev. 4   Vote: I like it 0 Vote: I do not like it
      "when between any two girl's fingers there is a boy's finger"
      If there are more than one finger, there is not finger, but fingers. I think in this case number of fingers of the girl should be >= number of fingers of the boy-3. I locked my solution and got hacked, also got -50 pts for unsuccesfull hacking attempt.

      Edit. Ok after deeper consideration if there are fingers, then there is also a finger, but it is very confusing.
      → Reply
14 years ago, # |
  Vote: I like it +3 Vote: I do not like it
Why do codeforces arrange contests without reviewing problem statements.....
I hacked one or two solution who locked their solution after pretest passing. Clarification do too late to them... 
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    I am quit sure that after that, full contest duration was too boring to them to solve other questions....
    → Reply
14 years ago, # |
  Vote: I like it +7 Vote: I do not like it
If you rate, those who get points by challenging codes which were based on mistaken statement would get advantage over others. So I vote for: Don't Rate
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    For mistake in A, if we delayed in other problems then why should our ratings be decreased?
    → Reply
14 years ago, # |
  Vote: I like it +3 Vote: I do not like it
don't rate!
→ Reply
14 years ago, # |
  Vote: I like it +8 Vote: I do not like it
Don't rate this one!

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14 years ago, # |
  Vote: I like it +6 Vote: I do not like it
Late correction
very bad and long statements problems (hard to be understood)

How can it be rated ???
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14 years ago, # |
  Vote: I like it +8 Vote: I do not like it
It is wrong to remove the points gotten by hacking the first problem. Many people didn't attempt other problems just to hack.
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
not considering hacking attempts of A is a good decision.
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  • 14 years ago, # ^ |
      Vote: I like it +6 Vote: I do not like it
    It wasn't a good one.
    The mistake in problem statement was very great and can't be solve with this decision.
    → Reply
14 years ago, # |
  Vote: I like it +25 Vote: I do not like it
How come the contest will be rated even with the big mess with problem A? So if I lost 30 minutes looking for challenges they will be ignored and I end up having spent 1/4 of the contest for nothing?
Also, I have a resubmit because of the wrong statement (also lost some time to ask a question), and the people, who used Russian statements don't get punished at all. I really DO NOT think this contest should be rated.
I also realized there are two possible ways to get problem B reading the English statements (of course after locking the problem and having it hacked).
I am sorry the contest was messed up (and for the work of the authors of the problems) but in my opinion a problem like this shouldn't be ignored.
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14 years ago, # |
  Vote: I like it +5 Vote: I do not like it
I submitted solution for 'A', turned out I was wrong.  Thanks to the late broadcast message. Lost motivation. :(
The judge should make sure, the questions are atleast correct.
It should not be *rated*

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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
I have an idea=) Give all people the opportunity to choose whether their rating will be rated or not (although it is difficult to choose a default option - rate or not) and then make new rankings only with the people who want to be rated. After that calculate new ratings based on that performance. 

In this way the element of knowing approximately where you would be after sys tests is removed. 
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14 years ago, # |
  Vote: I like it +6 Vote: I do not like it
Please unrate this contest. THIS IS TOTALLY UNFAIR.
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14 years ago, # |
  Vote: I like it +1 Vote: I do not like it
The notice for problem A came too late, even after I had locked it and looked forward to challenge others. I suggest it should *not be rated*.
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14 years ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it
I think the decided resolution is the most unfair of all. What are the arguments in favor of ignoring A hacks and rating the round?

I understand the unfairness that comes from those hacks, but it should either be rated or unrated completely.

I myself when read the statement realized it was wrong, it didn't match, but I saw people had submissions. So I thought I must be not getting it, after the clarification solved it correctly, locked it and started hacking. I didn't even read other problems for about 40 minutes, but I thought the round was going to be cancelled or not, never imagined that 40 minutes were going to waste and match was going to be rated anyway.

I even think that submitting and locking a problem, were statement is clearly wrong is the contestants fault. However, I understand how the problem may be considered a reason for unfairness. But I think is completely wrong to rate a part and not the other.

This is just penalizing people who realized that all submissions before clarification had to be wrong because they sent a solution that in no way could comply with the statement. And favoring people who sent solutions that they had to know were at least fishy, no one could have written a solution they thought was correct according to the statement that also solved the last example.

EDIT: I just read the Russian version was correct, don't know if it is true, but that makes it even more unfair. I think it shouldn't be rated completely.
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14 years ago, # |
  Vote: I like it +9 Vote: I do not like it

First of all , Just removing points for hacking doesnt , account for all those things that could have happened and that has happened.

REMEMBER "Butterfly Effect" . 

or "Chaos Theory" .

So, If you want to rate , plz take "OTHER" things into considerations ...and balance the ratings.

Otherwise don't rate.

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14 years ago, # |
  Vote: I like it +11 Vote: I do not like it
I think this round should be unrated, because the miss at problem A was fatal one.

The problems were nice, though.
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14 years ago, # |
  Vote: I like it +13 Vote: I do not like it
Can somebody explain to us how this non-rating choice will work? Thx
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  • 14 years ago, # ^ |
      Vote: I like it +6 Vote: I do not like it
    And can we see what would our new rating be , before making a decision?
    → Reply
    • 14 years ago, # ^ |
        Vote: I like it +3 Vote: I do not like it
      Of course, no, you can't see your new rating before making a decision. If it would be so, everyone would decide better variant for himself =)
      → Reply
14 years ago, # |
  Vote: I like it +6 Vote: I do not like it
Guys, wake me up when the descision has been taken.  :)
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14 years ago, # |
  Vote: I like it +9 Vote: I do not like it
I think this round should be unrated.
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it

The problems were really nice. It would be sad ending of a good contest if it is unrated.

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14 years ago, # |
  Vote: I like it +30 Vote: I do not like it
Is this an exam about English Story Reading?
Recently, the problems statement are so hard to understand!
These difficult statement and complex story has no significance at all.
Please express the questions with an easy way.
Thanks a lot!
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    +1

    They are also sometimes ambiguous.

    → Reply
    • 14 years ago, # ^ |
        Vote: I like it +1 Vote: I do not like it
      That's +2 actually!
      → Reply
      • 14 years ago, # ^ |
          Vote: I like it +1 Vote: I do not like it
        +3!!
        For problem C, I can only understand the problem after reading the output specification. (And, I can understand the problem by *JUST* reading the output specification.)
        → Reply
        • 14 years ago, # ^ |
            Vote: I like it +1 Vote: I do not like it
          But, well, as many other also do, I have to say the problems are really nice. The statements can be improved though.
          → Reply
14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
don't rate!


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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
I think that, for these rounds, it should have also a 'dummy' to read the problems (one to the English translation and other to Russian one) and fully understands it, to don't have this situation that happened with the 'A' problem
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14 years ago, # |
  Vote: I like it +6 Vote: I do not like it
YES , I think this round should be unrated. :D

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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
Rate it
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    no , problem A is ambigious  , contest not be rated
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    • 14 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it
      After updating the problem(in English) it seemed ok to me. I solved it with pen paper..its about fixing boys fingers and arranging girls fingers or fixing girls fingers and arranging boys fingers....i tried it by taking 4 Boys fingers and then finding the way in which girls fingers can be arranged. Also taking 4 Girls fingers and arranging boys fingers in all the fashion...gives the clue for solving this problem.
      → Reply
      • 14 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it
        yes,  but if anyone solve(i mean pass preset) and lucked problem and then him see that problem was changed , so what is your idea for this ?

        you know that after locking any problem , you cant submit problem again
        → Reply
        • 14 years ago, # ^ |
            Vote: I like it 0 Vote: I do not like it
          If you initially used only what was given in the problem statement, how did you pass the test case 3 given on the problem A page? The answer should have been YES with the conditions given there while the output mentioned was NO.
          → Reply
14 years ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it
However, everybody can decide the result of round. You can choose your rating will be updated or not. For this reason voting will be opened soon. Voting will ends tommorow, 26th february, at 12 pm (GMT+3). If you will not vote your ratings will not update.

All results of hacks of problem A will be annuled. You do not take you +100/-50 points for each hack of this problem.


Good One!?!

→ Reply
14 years ago, # |
  Vote: I like it +4 Vote: I do not like it

If one chooses to have the round rated for them, on what basis will the new rating be calculated? I mean, will it take into account the performance of all contestants, or just the ones who have also agreed to be rated? In the latter case, the rating can be quite skewed/random, because there will be no poor performers in the group of people who agree to be rated. So I think the first case is the way to go.

How can we know if we should want to be rated? ;) Will our possible rating be calculated and presented to us?

Also, if so, why not just raise ratings for exactly those contestants who have the new rating higher than the old one?

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  • 14 years ago, # ^ |
    ← Rev. 2   Vote: I like it +1 Vote: I do not like it
    I think you shouldn't try to figure out if you should be rated, but whether rating the round is a correct decision. And do it so thinking what is better for Codeforces and not yourself.

    Not rating a contest is bit sad, but the rankings remain true and unbiased.

    Rating an unfair round introduces a big bias on the ranking and has an impact on how Codeforces is perceived. I'm sure most people here think TopCoder rankings can be trusted, to some degree. Also, I think that is because they cancel matches where real unfairness is found.

    If unfair rounds go into the ranking, then the bias may be so big that there is no point to see that ranking. So I think when voting you should consider what's best for Codeforces and not yourselves.

    EDIT: missed a *not*, had written "yourself" but I meant "not yourself".
    → Reply
    • 14 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      I think it's up to the organizers to decide. If I were them, I would make the round unrated without any hesitation (and announce that 15 minutes into the contest, as soon as it became apparent that all hell is going to break loose with the hacking and what not).

      However, if the organizers decide that the round will be half-rated, I don't expect many people to choose to have their rating lower, yet unbiased.

      → Reply
      • 14 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it
        I agree they should have cancelled the round when they saw the hacking madness.

        And probably you are right about people not deciding to lower their ranking, but I prefer to have had a practice session (unrated round) which keeps the ranking unbiased over increasing rating in a ranking that means nothing.
        → Reply
        • 14 years ago, # ^ |
            Vote: I like it 0 Vote: I do not like it
          I apologize, I didn't really understood they half-rated decision before. I understood it as voting would decide whether round was going to be cancelled or not.

          This way of course, no one will ask to have rating lowered.
          → Reply
    • 14 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      Hmm..., I rate this site as high as TopCoder , So I guess, making it totally unrated would be good descision.

      Because, allowing people to choose to be rated, seems little odd

      and little uneasy when the reputation of this site comes in mind.

      Not rating this will not affect anything, we will say just a bad day...

      → Reply
14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
that should be rated ,
if you ignore hacks on A
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
People who submitted problem A earlier had taken a risk. Test case 3 should have warned them. How could you submit without understanding the problem statement? So it was fair and I think this contest should be rated. Also everyone had a chance to hack other solutions in their room.
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
I agree with ameydhar. There was clearly some mistake with the problem statement. If you chose to lock it, it was your choice to take that risk. What does baffle me is how tourist was able to submit a correct solution to probem A within 2 minutes of the round start...
→ Reply
  • 14 years ago, # ^ |
      Vote: I like it +2 Vote: I do not like it

    He's just that good.


    Just kidding :D He probably read the Russian statement, which was fine.

    → Reply
    • 14 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it
      Oh, Russian statement was correct, I failed to read that on the post, sorry!
      → Reply
  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    Russian statement is correct... so he could submit by such time.
    → Reply
14 years ago, # |
  Vote: I like it +7 Vote: I do not like it
want to be rated...
→ Reply
  • 14 years ago, # ^ |
      Vote: I like it +1 Vote: I do not like it
    NO,  but if anyone solve(i mean pass preset) and lucked problem and then him see that problem was changed , so what is your idea for this ?

    you know that after locking any problem , you cant submit problem again

    contest is ambigious specially problem A
    → Reply
  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    I think my rating may increase , but this is not fair.
    → Reply
14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
^@ I agree. Contest Should be rated.
→ Reply
14 years ago, # |
  Vote: I like it +1 Vote: I do not like it
^@ I agree. Contest Should be rated.
→ Reply
14 years ago, # |
  Vote: I like it -9 Vote: I do not like it
This was the worst Codeforces contest ever
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14 years ago, # |
  Vote: I like it +4 Vote: I do not like it
Where will the voting take place? Anyone that knows, mind posting the link or at least some info?
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
voting is added
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    Will the rating calculations account for peformance of all the participants of the round or only that participants who voted "YES"?
    → Reply
    • 14 years ago, # ^ |
        Vote: I like it -20 Vote: I do not like it
      Rating will be distributed among participants voted "YES".
      → Reply
      • 14 years ago, # ^ |
        ← Rev. 2   Vote: I like it +19 Vote: I do not like it
        No, no, no! That's bad idea.

        IMO, the Rating calculations should be done including all participants.
        The Confirm button just for agreeing of applying this changes.
        → Reply
        • 14 years ago, # ^ |
          ← Rev. 2   Vote: I like it +19 Vote: I do not like it
          I agree. Clicking "confirm" is a total lottery now, unless you're in one of the first few places.
          → Reply
        • 14 years ago, # ^ |
            Vote: I like it 0 Vote: I do not like it
          I agree with you.
          → Reply
        • 14 years ago, # ^ |
            Vote: I like it 0 Vote: I do not like it
          Then one can calculate his rating by the given formula in one of the topics here and vote yes if the difference  is positive. That's not the case for a contest's rating:)
          → Reply
          • 14 years ago, # ^ |
              Vote: I like it 0 Vote: I do not like it
            I think the same thing.
            If all participants take this strategy, ratings are only increased in this round. This means that average of ratings is increased. It can be considered that ratings of who are not participated in this round are relatively decreased. I think that this is also unfair.
            → Reply
            • 14 years ago, # ^ |
              ← Rev. 3   Vote: I like it +5 Vote: I do not like it
              Come on guys. How much does this rating worth? What would you get if you have a rating of 50 points higher?
              Everything will become normal and fair just after the next contest. 
              There was a mistake in one statement and now you are looking for the completely fair way of updating a rating which won't change anything. 
              Our ratings do not describe us, this is not important enough for wasting so much time and thought on it.
              → Reply
        • 14 years ago, # ^ |
            Vote: I like it 0 Vote: I do not like it
          "The Confirm button just for agreeing of applying this changes."

          It's impossible because rating sum of all participants before contest and after contest must be equal
          → Reply
          • 14 years ago, # ^ |
              Vote: I like it 0 Vote: I do not like it
            If it was possible to ignore all hacks by A (-550 my pts.), it's possible to change ratings in way that I said.

            Gerald: Just one SQL request... ;-)
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      • 14 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it
        What does distributed mean ? Calculated for all 1200 and distributed to those who voted "yes" ?
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      • 14 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it
        May I un-vote?
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      • 14 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it
        The ratings should be calculated considering all contest participants and only be distributed to those who want to be rated. Else, this would be unfair to the people who have not done well but have shown the spirit and want to be rated.
        If this is not possible, the contest better be unrated for all.
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  • 14 years ago, # ^ |
    ← Rev. 2   Vote: I like it +1 Vote: I do not like it
    Wait. I don't get it. Will the rating be calculated on basis of scores of all 1200 participants and applied to only those who voted "YES" or will it be calculated only taking into account those scores who voted "YES" ? In the second case, this is so wrong. Its almost sure disaster for all except the very top ranks and its totally random. Please calculate on basis of all 1200 participants and apply it to those who voted "YES" .. this approach only makes sense.
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14 years ago, # |
  Vote: I like it +4 Vote: I do not like it
I think rated this contest is ok. Besides problem A, there are four more problems waiting for you to solve. Moreover, the score of problem A is the least one and it's the most easy problem. Why be so serious on a piece of cake? Although hacking is interesting, to the respect to the problem provider, I think solving problem is more important. Good night.
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    unfortunately, most of people can't solve anything excepts A and B problems, and A for them is really costly "piece of cake" =/
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14 years ago, # |
  Vote: I like it +4 Vote: I do not like it
Oh, that "Confirm" button is sooo tempting.. 
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14 years ago, # |
  Vote: I like it +3 Vote: I do not like it
Can we see in the standings who confirmed and who didn't confirm?
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14 years ago, # |
  Vote: I like it +3 Vote: I do not like it
Hope that Codeforces admins will hear our calling for this message.
It was nowhere told about that rule. :(

Even if we need to wait results till the start of registration to CFBR#59(Div.2).
It would be more fair.
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14 years ago, # |
  Vote: I like it +4 Vote: I do not like it

I didnt participate, but I confirmed LoL.

Hey Alex_kpr change ur profile picture . 

It is getting on my nerves. It looks like a psychopath. :P

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  • 14 years ago, # ^ |
      Vote: I like it +2 Vote: I do not like it
    I love my profile picture =)

    You are not the first who let me out to a doctor =)
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14 years ago, # |
  Vote: I like it +3 Vote: I do not like it
I think the English problem statements should be shorter and more concise. It took me lots of time to understand some problem statements in recent contests, given that the English translation is not really good.
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  • 14 years ago, # ^ |
      Vote: I like it +3 Vote: I do not like it
    I'm sorry for all non-russian participants

    but you should understand that Codeforces is a russian project and some problem authors have extremely big troubles with english language

    we are trying to make english statements are equal to russian but some bugs are inevitable, so we asks you to be more tolerancy

    I believe the situation with english statements will improve with every new contest
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
I don't think it's fair to decide blindly whether it should be rated or not. Clearly, top coders will vote yes and bottom coders will vote no. Being in the middle of the standings table, I really don't know what to do. It is like participating on a contest without knowing who the registrants are, how many registrants are there, and not having a scoreboard up until the end of the contest....
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
Why my code, which is hacked, get AC in the practice Room?
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    I would guess that the system tests didn't have a case that broke your bug, or if you are using C/C++ you may have some memory problem (like going out an array) which causes undefined behavior and doesn't always break.

    Those are just guesses though.

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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    Was it a query with length more than 10^5?
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
I voted "YES".  Round #59 will be rated. :P
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Can we get who have chosen be rated?
and how?

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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
Where can I vote to be rated or not?
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  • 14 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    Unfortunately, Voting is now closed .. and anyone who didn't vote is considered out of the competition ;)
     
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14 years ago, # |
  Vote: I like it +15 Vote: I do not like it
Ratings have been updated.
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  • 14 years ago, # ^ |
      Vote: I like it +3 Vote: I do not like it
    sry , i didn't know you remove coders (that want unrated contest)
    i don't like competing with a lot of reds :D
    we can't change our decision ?
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
Where were we supposed to vote?? I had no idea and no one give any link where the voting was taking place... Can someone tell me how this voting thing goes about?
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14 years ago, # |
  Vote: I like it +5 Vote: I do not like it
thanks for nice problems!
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14 years ago, # |
  Vote: I like it 0 Vote: I do not like it
Where is Solution??I dont't know how to do D.
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