A Critical Reflection on the 28th International Biology Olympiad

53rd International Mathematical Olympiad

Ernest Chiu 10 West Windsor Plainsboro High School Plainsboro, NJ Paolo Gentili 10 Canyon Crest Academy San Diego, CA Courtney Guo 10 International School of Beijing Beijing, China Steven Hao 10 Lynbrook High School San Jose, CA Andrew He 9 Monta Vista High School Cupertino, CA Calvin Huang 10 Henry M Gunn High School Palo Alto, CA Shashwat Kishore 9 Unionville High School Kennett Square, PA La...

th International Mathematical Olympiad

2. A configuration of 4027 points in the plane is called Colombian if it consists of 2013 red points and 2014 blue points, and no three of the points of the configuration are collinear. By drawing some lines, the plane is divided into several regions. An arrangement of lines is good for a Colombian configuration if the following two conditions are satisfied: • no line passes through any point o...

28th International Colloquium on the Pupil

A mathematician reflecting on the International Olympiad in Informatics

In July 2013, students from 80–90 countries will descend upon Australia to take part in the International Olympiad in Informatics (IOI). On the surface the IOI is a computer programming competition, but in fact it involves a great deal of both mathematical technique and mathematical creativity. In this short article we introduce the readers to the IOI and the mathematics within. 1 Introducing t...

The International Olympiad in Informatics Syllabus

The original proposal of the IOI Syllabus was co-authored by Tom Verhoeff1, Gyula Horváth2, Krzysztof Diks3, and Gordon Cormack4. The current maintainer of the Syllabus is Michal Forǐsek5. The Syllabus evolves thanks to input from the IOI community. The following people helped to evolve the Syllabus by sending in their feedback: Paul Ashton (NZL), Thomas Barnet-Lamb (GBR), Giorgio Casadei (ITA)...