Miscellaneous
5 units
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A unit consisting entirely of troll "anti-problems" which are suitable for giving to your enemies.
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A difficult unit consisting of problems with deceptively short statements. A lot of the difficulty of these problems is setting up an entire framework to attack a simply stated problem. These setups are often more elaborate or detailed than in other problems.
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A short end-of-year unit containing open problems I solved at the Duluth REU.
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Not an actual unit; used internally as a canonical file for testing. If you unlock this unit, you will get a blank file. NOTHING TO SEE HERE MOVE ALONG. More seriously you can use this to test the submission interface too if you are new to OTIS.
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The worst olympiad problems you've ever seen. The name is a reference to the video game term in which you do the same thing over and over.