Kostroma and I are problemsetters of Codeforces Round #120. It's first our contest and we hope you (and we too) will like it.
It's round for second division, but we think that everyone will find interesting problem for him.
Thanks for the help STAJIKER, HeroShadow, victor_kamashev, Abra, ifsmirnov, Aksenov239 and Gerald.
Thanks MikeMirzayanov for CodeForces platform and Delinur for English statements.
Good luck!
UPD: As usual, problems will cost 500-1000-1500-2000-2500 points.
UPD2: Problems are sorted according to expected difficulty.
UPD3: There was our mistake. The editorial was available for few minutes. If you see it, please not discuss problems and solutions. Now it is hided. In any case the round will be held. Decision, will contest rated or not will be made after contest. We are sorry for that.
UPD4: It's now known that only three participants from Div.2 have seen page with editorial while it was published (and 8 people in total). We'll not say any names, but we ask this people to not say anybody anything about the problem and to not use any post materials, if you have them. Thanks in advance.
UPD5: Please, don't panic. While your solution is in queue, you may solve other problems.
UPD6: Due to technical issues round is considered unrated. This problem and incident with editorial are strong enough reason for this decision. You may send your solutions to contest. They will be judged. We hope, that these technical problems will not spoil your impression about this round. Our sincere apologies. UPD7: Contest is over. Editorial is published. We hope, you like problems, prepared by us. We apologize again.
P.S: Excuse me, I don't know, when solution will be judged.
My usual question is: Is dynamic max. score used?
Also someone can be interested if problems are sorted according to expected difficulty.
No, scoring system will be standart
"As usual, problems will cost 500-1000-1500-2000-250 points." I think it should be 2500 points, not 250 points. Lol. :)
Fixed
Gym have a contest. Anyone can participate.
I hope that it will be very good and eazy ))) contest..
It seems that the editorial was revealed for a while (now it disappeared). Was that a bug from the website?
Probably author mispushed Save instead of Save Draft.
It was mistake by authors.
I wonder how many people managed to see the editorial. It will be very bad if contest will become unrated before the start.
Fortunately, I didn't see any things.
The contest should be rated, if someone after watching the editorials decides to cheat, perhaps in this contest that persons gains some points but in the next contest they will return to where they belong. Please keep it rated.
and you guys want us to compete in a contest we don’t know whether it’s rated or not?
Rate or not doesn't matter to me. I will compete and enjoy the contest anyways!
contests are rated .. if they are not .. it’s called practice .. u can practice anytime .. not necessarily during this 2 hours !
contests can be rated or not. the decision will be made by the admins. which part of it you don't understand?
which part of "contest" you didn't understand?
I understand, it's bad not to rate a contest. But it also means contest can be rated or not.
BTW, ALL contests are just practice to me. You and I have different dictionary.
enjoy the contest :D
all the best everyone for the contest...
Judgement Failed
Why Judgement Failed?
I am getting "Judgement failed" when i try to submit a problem, what does that mean?
Judgement Failed what it means? Что ето значит?
Judgement Failed...?
What is "Judgement Failed?" I am not even able to resubmit. No one answers when I asked from the dashboard.
Judgement Failed too
I think this round should be unrated, because this "Judgement Failed" cost a lot of time.
The round should definitely be unrated...
judgment failed
Is there any reason to rate this contest after all these editorial leaking,judgement failure and than site down?
In queue
yes maybe they have stopped the grader
Please add a time...
If this round is unrated, you can try this problem on practice mode in unlimited time
Due to current situation, round can't be rated.
This round is like Topcoder SRM, you submit solution, and you must wait 'till the end to know the result. Solution submitted will be "In queue" 'till the end of the contest :d, but you can't hack other, thought. Just kidding!
While waiting, you can submit as many submission and watch the ball bouncing together
watch the ball bouncing together...haha
hey admins pls. say what happens...
***** removed old stupid comments **** upd: sorry for that.
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Лучше не надо.
What's going on?
Contest going on! ;)
It's the worst contest ever nevertheless the problems themselves are great.
I think it's fortunate that I am competing as out-of-competition; if otherwise, I'd be quite nervous whether it'd be rated/unrated among other things...
It is their first contest so problems are hard to prevent. However, great problems. Don't be upset about your unsuccessful start. You can do better next time.
Well, I think it is a technical issue, so there is no problem related to the contest authors.
Thanks!
thank you, guy
No offence ...but maybe the team is missing the expertise of Mike Mirzayanov who is gone for ICPC I suppose...
I am going to guess that it's not only him; I think most people's focus is on ACM-ICPC WF right now... :P
Can't agree more XD
Thanks for stealing 1.5 hours of my life
You're welcome
You're play only for rank? I play for solve problems!
***** removed old stupid comments **** upd: sorry for that.
Українець? Или так понтуешся?
***** removed old stupid comments **** upd: sorry for that.
лох ти а не українець
***** removed old stupid comments **** upd: sorry for that.
до тебе?
***** removed old stupid comments **** upd: sorry for that.
ти дебіл і не розумієш того
Хохлы, успокойтесь!
I think, in ideal case, it should be a correct balance between the two, with a focus on solving interesting problems
But having a better rank allows you to have harder problems (div 1), and play for rank is stimulating.
So from last 4 Codeforces rounds (including this one) only 1 was rated
well this only is only .5 since it's division 2 only; remember, we were out-of-competition competitors :P
But anyway because of technical issues some people from div1 didn't stayed till the end of the round, so the unrated factor affected div1 participants too in some manner.
I agree with that; none of us really stayed till the end, or I wonder if anyone did.
this is my first attempt in online contests... what a pity.
But never the less, the problems are quite nice and interesting to solve. Come here next time and you'll enjoy it:)
Not till the end because I have already submitted for all problems. Just don't have any chances to fix if some won't pass pretests :)
yea that's the issue- you can't really fix now, can you? LOL
so... may you explain how to solve problem E. thanks.
There is two possible solutions in editorial
LOL. I did stay till the end.
So when can the solutions be judged?
Yeah. When they will be posted ?
hacked by hackers
I think, it should not, because all competitors were in equal conditions:)
It's better to say: without conditions.
It's unrated.
I agree with you .This cost too much time.
When will we be able to run practice?
Obviously, after the finish of the system testing. But, as you see, it hasn't started yet.