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Internet Problem Solving Contest

IPSC 2012 Announcements

2012-06-06 20:50:00 UTC
Our programs and correct outputs are now available for all contest tasks.
2012-06-04 06:55:00 UTC
The results are now final. Here is a summary of the changes:

The team Havka-papstvo was awarded +2 points for correctly solving the data set D2. Their original submission was only rejected due to a missing definition of rounding mode (i.e., the answer to "how should 0.125 be rounded to two decimal places?"). We also checked that this was the only affected submission for problem D.

Seven teams who solved B1 or B2 in a way that in our opinion violated the contest rules were contacted. After receiving their explanations (almost none) these teams were removed from contest standings.
2012-06-02 17:20:00 UTC
Please note that the results are not final yet: we are checking one appeal and we will be removing some cheaters before declaring the results official.
2012-06-02 15:30:00 UTC
The contest is over and the solution booklet is available. Thanks for taking part, we hope you enjoyed it! See you in 2013!

Actually, feel free to come back to the contest site in a few days. We will soon publish some more stuff -- correct outputs, programs, and some statistics.
2012-06-02 13:07:00 UTC
Problem H. The correct constraints for the easy data set should be r,c ≤ 20, not r,c ≤ 12. Sorry about that.
(Also: That's probably not why you are getting "Wrong answer" :) )
2012-06-02 12:22:00 UTC
Problem D. Anything that is listed as a country (in particular, also "_no_specific_country_") is a country. Anything that is listed as an institution is an institution.
2012-06-02 10:00:00 UTC
The contest has started. The password for the encrypted files is w3erm5KLf45c.
2012-06-02 09:30:00 UTC
Beat the rush – download early!
You can already download an encrypted package with all you need to start solving. Then, once the contest starts, refresh this page once to see the password.
Starter package (2.3 MB, download now): LF (Mac/Linux), CR+LF (Windows)
Test data for problem E (5.7 MB): LF (Mac/Linux), CR+LF (Windows)
Test data for problem J (25 MB): LF (Mac/Linux), CR+LF (Windows)
(It should be sufficient to only download the test data for E and J once you start solving the particular problem.)
2012-06-02 08:00:00 UTC
The practice session is over! You can take a look at solution writeups. We sincerely apologize to all 29 teams who solved the entire practice problem set and then were bored for the rest of the practice session. We promise this won't happen to you in the real contest! :)
2012-06-01 07:27:00 UTC
Clarification requests during the contest: You can reach us via XMPP/gtalk at ipsc2012@jabber.org. Alternately you may send an e-mail to ipscreg at ksp.sk.
2012-05-31 01:27:00 UTC
Did you try to register but never received an e-mail from us? Maybe you made a typo when entering your e-mail address. Also try checking your spam folder. If that does not help, contact us (e-mail: ipscreg [at] ksp.sk) and we will fix your account manually.