News
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Memory limit for the task East-West has been increased to 64 MB. All submissions have been reevaluated.
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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.
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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.
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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).
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We have added the tasks from the two Polish CEOIs to MAIN.
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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.
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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.
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It appears that the evaluation works.
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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.
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English versions of the tasks from 17th POI are now in MAIN.
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English versions of the tasks from 15th POI are now in MAIN.
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Now all tasks from Algorithmic Engagements 2010 are available in MAIN.
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Tasks from IOI 2009 were just added to MAIN.
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All tasks from online rounds of Algorithmic Engagements 2010 are now in MAIN.
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We have added English versions of the tasks from 16th Polish Olympiad in Informatics. Have a nice problem solving!
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We have added the problems from the International Olympiad in Informatics 2008 (Cairo).
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All tasks from Algorithmic Engagements 2009 are in MAIN now.
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All tasks from online rounds of Algorithmic Engagements 2009 are in MAIN now.
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The MAIN checkers are back, so you can submit your solutions and they will be verified. Once again we apalogise for the inconvenience caused.
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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.
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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.