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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

Tom VERHOEFF

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

Abstract

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.

Keywords:

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


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