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OLYMPIADS IN INFORMATICS, 2009, Vol. 3, 149-166
© Institute of Mathematics and Informatics,

ISSN 1822-7732

20 Years of IOI Competition Tasks


Department of Mathematics and Computing Science, Eindhoven University of Technology Den Dolech 2, 5612 AZ Eindhoven, The Netherlands E-mail: t.verhoeff@tue.nl


The competition tasks at the International Olympiad in Informatics have evolved over its 20-year history. We distinguish three periods in this evolution and highlight it from various viewpoints. The 101 competition tasks are presented in a table that summarizes their task type and difficulty level, and that classifies them according to concepts involved in their problem and solution domains.


computer science competition, International Olympiad in Informatics, competition tasks, algorithmics, history

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