News

2012-03-20 03:23 Memory limit for task East-West, 11th POI
Memory limit for the task East-West has been increased to 64 MB. All submissions have been reevaluated.
2011-12-02 21:30 More corrections in 6th POI
We have corrected test data for the task Bitmap from 6th Polish Olympiad in Informatics - newline symbols were missing in output files. Additionally one test case for the task Ice rink has been corrected.
2011-11-18 00:54 Algorithmic Engagements 2011 online final round
This year an online final round of Algorithmic Engagements will be held, in parallel to an onsite contest in Poland. Save the date: November 26, 9:00-14:00 Warsaw time. Problem statements will be available in English and Polish. See also the official website: http://contest.mimuw.edu.pl

This is an individual ACM ICPC-style contest. Check out the tasks from previous final rounds of Algorithmic Engagements at MAIN.

2011-11-17 12:40 An error in test data for problem Sleepwalker from 6th POI corrected
We have corrected 4 test cases for the task Sleepwalker from 6th Polish Olympiad in Informatics. All solutions have been reevaluated. We apologize for the error.
2011-11-04 21:41 AMPPZ 2011
This is the first time that tasks from a collegiate contest are added to MAIN. Now you can enjoy solving the problems from Polish Collegiate Team Programming Contest 2011, AMPPZ 2011. Note that this is an ACM ICPC-style contest, each solution is either accepted (1 point) or rejected (0 points).
2011-07-13 23:25 CEOI 2011 and CEOI 2004 in MAIN
We have added the tasks from the two Polish CEOIs to MAIN.
2011-06-20 01:00 CEOI 2011 online contest
The CEOI 2011 online contest will take place during the compatition days of the actual contest (Saturday - July 9, 2011 and Sunday - July 10, 2011). The online contest will be held exactly at the same time as the actual contest, using the same tasks (problem statements in English) and test data. More information can be found in the official website of CEOI 2011.
2011-06-09 16:16 8th, 9th and 10th POIs
We have added English versions of the tasks from 8th POI, 9th POI and 10th POI. Thus we are still missing only the first three POIs, for which, unfortunately, the test data is missing - we will cope with this problem soon, though.
2011-05-26 16:07 Some problems with solution evaluation
We have recently experienced technical problems with our evaluation machine, which caused some delays in evaluation of submissions. We apologize for this, everything should work fine now.
2011-05-21 04:39 6th and 7th Polish Olympiad in Informatics
This time we have added the tasks from 7th POI. We have added English versions of the tasks from 6th POI and 8th POI.
2011-05-14 22:34 4th and 5th Polish Olympiad in Informatics
We have added the tasks from 4th POI and 5th POI. You are welcome to submit your solutions.
2011-04-05 23:46 Problems with evaluation cont.
It appears that the evaluation works.
2010-12-28 15:03 Stage I of 18th POI
From now on we will be adding tasks from this year's edition of Polish Olympiad in Informatics stage by stage. Now we have added Stages I and II of 18th POI.
2010-11-14 23:14 17th POI now in MAIN
English versions of the tasks from 17th POI are now in MAIN.
2010-08-05 21:03 15th POI now in MAIN
English versions of the tasks from 15th POI are now in MAIN.
2010-06-03 01:27 Algorithmic Engagements 2010
Now all tasks from Algorithmic Engagements 2010 are available in MAIN.
2010-05-18 22:49 IOI 2009
Tasks from IOI 2009 were just added to MAIN.
2010-04-22 22:02 Algorithmic Engagements 2010
All tasks from online rounds of Algorithmic Engagements 2010 are now in MAIN.
2010-03-27 23:05 16th POI
We have added English versions of the tasks from 16th Polish Olympiad in Informatics. Have a nice problem solving!
2010-02-19 21:41 IOI 2008
We have added the problems from the International Olympiad in Informatics 2008 (Cairo).
2009-05-18 15:54 AE 2009
All tasks from Algorithmic Engagements 2009 are in MAIN now.
2009-04-29 00:10 AE 2009 - online rounds
All tasks from online rounds of Algorithmic Engagements 2009 are in MAIN now.
2009-02-09 15:53 The solutions are being checked now.
The MAIN checkers are back, so you can submit your solutions and they will be verified. Once again we apalogise for the inconvenience caused.
2008-09-20 19:27 High School Programming League 2008/2009
A new programming contest (especially for high school students, but not only for them) has just started; more info can be found at: hs.spoj.pl.
2008-08-12 01:31 MAIN has an English version now!
Welcome in MAIN!

MAIN is a Polish website for everyone who is interested in programming and algorithms. And now it has an English version too!

MAIN contains an archive of tasks from many programming competitions and camps, for which you can submit your solutions. There are English versions of tasks of the following competitions in MAIN now:

We shall be adding English versions of tasks from other competitions present in MAIN and also increasing the number of competitions present. The English versions of the tasks will always be added some time later than the Polish versions, because tasks are often translated after the end of each contest.

Unfortunately, some parts of the website are only in Polish now; they are denoted by the "PL" sign. Sorry.