Internet Problem Solving Contest

IPSC 2016 Announcements

2016-06-20 00:36:00 UTC
All materials from IPSC 2016 are now available in the Archive. A new, fancier version of the solutions booklet has also been uploaded.
2016-06-18 18:21:00 UTC
You can now submit IPSC 2016 problems in the Training Area. Have fun!
2016-06-18 16:54:00 UTC
The first draft of the solutions booklet is now available. Grab it while it's hot :)
2016-06-18 16:00:00 UTC
Well, that's that. Year #18 of the IPSC is over. What a ride!

Congratulations to shik, step5, and peter50216 from National Taiwan University for winning it all this year, 31 points is a truly impressive score.

And congratulations to the rest of you as well! We hope you had fun, and we are already looking forward to seeing you back next year!

Stay tuned! The solutions booklet should be available soon(ish).
2016-06-18 13:05:00 UTC
In problem E the grader mistakenly rejected submissions that output exactly R*C configurations of mines. The grader has been fixed and the task has been rejudged. We apologize to the two affected teams for the inconvenience. Additionally, some solutions that still do receive a "Wrong answer" may now see a different error message as the reason for having a "Wrong answer".
2016-06-18 12:23:00 UTC
In problem C there is a typo in the example. The first line (i.e., the number of test cases in the input) should obviously be 3, not 2. This will be updated in the online version of the problem statements soon.
2016-06-18 11:52:00 UTC
In problem F, we have been incorrectly marking some valid submissions as "Wrong answer". The problem was fixed and all submissions were rejudged. We're sorry for the inconvenience.
2016-06-18 11:36:00 UTC
In problem G the grader has been rejecting submissions that print extra empty lines between test cases. We have decided to accept these submissions.

Update: The rejudging has been completed and the new, more tolerant grader is now in place.
2016-06-18 10:48:00 UTC
If you have a slower internet connection, you can already download encrypted archives for Windows and Linux. The password will be published when the contest starts. An unencrypted version will be available once the contest starts.

Update: the password for the encrypted archives is 7c0f898595a9c85c88a18156c9166802
2016-06-18 09:18:00 UTC
The practice session has concluded. The real contest is less than two hours away!

Our congratulations go to the 24 teams who managed to solve all practice problems, and especially to the team Bright Future who did so with an amazing penalty time of only 270 minutes.

Sample solutions of the practice problems will be available after the real contest.
2016-06-17 08:29:00 UTC
During IPSC 2016, you may need to run some Python 2 programs we’ll give you. Visit its official website to learn how to install Python if you don’t already have it.

For Windows, download Python 2 from the above link. For Linux, use your package manager to install the right package, such as python2 or python2.7. For OS X, you probably already have Python 2 preinstalled.

Download and run the script python_test.py to make sure everything works as expected. Enter "python python_test.py" in a command line, or double click the script in a Windows folder. The script should create the file "python_test.txt" containing the text "All OK".
2016-06-17 08:17:00 UTC
Hello there, and welcome to another edition of the IPSC!

The practice session will start in about 40 minutes. Should you have any questions or clarification requests, e-mail them to ipscreg@ksp.sk. Alternately, you may use any instant messaging client that supports XMPP to talk to us at ipsc-org@swissjabber.org whenever the account is online – which will certainly be during the beginning of the practice session and also during the entire contest tomorrow.