On April 6th, III (XIV) Volga Region Open Team Student Programming Contest was held in Samara State University. And now, we invite everyone who haven't already participated in the championship to join the Codeforces training contest version on April 28th (11:00 — 16:00 MSK, UTC+4). We believe that participants of any level will find problems that will be interesting for them. The contest will probably be mostly interesting to participants with violet and orange levels (difficulty is 4 stars).
This contest uses ACM ICPC rules. Use text files input.txt and output.txt instead of stdin/stdout.
Please, do not use the Internet, prewritten code and other sources: participants of the championship could not use any of these.
Contest was prepared by Dmitry Matov (Nerevar), Constantine Drozdov (I_love_natalia), Andrey Gaidel (Shlakoblock), Elena Rogacheva (elena), Sergei Shteiner (steiner), Dmitry Novikov, Alexander Efimov, Gennady Gutman.
Will the problem be in English or Russian?
both
I wonder why there is 2 extra minutes
At the contest (in Samara) technical hitch occured, and the jury decided to add 2 minutes.
This 2 minutes can be useful to the Samara's contestents.
Actually, last Accepted in Samara was at 4:59:48.
Knowing where to start reading the problem is a good skill used today :)
I totally agree with you. Stories don't make much sense but the problems are good. I really enjoyed the contest :)
pva701 and mexmans, your solutions of F are incorrect. Both of them fail on this test:
I still don't clearly understand the task in F. Do we start with the letter z or a random letter of the latin alphabet. At each step are we allowed to replace only the letter 'z' or any letter in the text?
We start with letter 'z' and each step we replace any letter 'z' in the text with the pattern.
Thanks a lot :-)
Can anyone explain the sample of Problem B?
I think the answer of the sample is 19 as the problem describes
No offense. The statement in english is quite confuse.
In problem D, all the number should be 'non-negative' not 'positive'. And in input description, M should be the number of 'portions' not 'days'.
In problem J, the range of U,
Unable to parse markup [type=CF_TEX]
is wrong.Especially for D, the confusion and rejudgement drove me crazy for quite a long time.
Anyway, preparing contest is a huge and tough job, we can never ask for a perfect contest. Thanks for this contest. These two gyms really delighted my weekend. :)
Как решать B?
How to solve B?
edit , wrong place