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International Olympiad In InformaticsThe International Olympiad in Informatics (IOI) is an annual informatics competition for secondary school students. The first IOI was held in 1989. The contest consists of two days computer programming, solving problems of an algorithmic nature. Students compete on an individual basis, with up to four students competing from each participating country (with around 81 countries in 2004). Students are selected through national computing contests. Structure of the competition On each of the two competition days, the students are typically given three problems which they have to solve in five hours. Each student works on his/her own, with only a computer and no other help allowed, specifically no communication with other contestants, books etc. Usually to solve a task the contestant has to write a computer program (in C, C++ or Pascal) and submit it before the five hour competition time ends. Later on, the program is graded by being run with secret test data, consisting of multiple (typically 10-20) test cases. The contestant is awarded points for each test case that his program solves correctly, and within the given time and memory limit. In some cases, the contestant's program has to interact with a secret computer library, which allows problems where the input is not fixed, but depends on the program's actions - for example in game problems. Another new type of problems has known inputs which are publicly available already during the five hours of the contest. For these, the contestants have to submit the according output file instead of a program, and it is up to them whether they obain the output files by writing a program (possibly exploiting special characteristics of the input), or by hand, or by a combination of these means. The scores from the two competition days and all problems are summed up separately for each contestant. At the awarding ceremony, contestants are awarded medals depending on their relative total score. The top 50% of the contestants (i.e. two per country, on average) are awarded medals, such that the relative number of gold : silver : bronze : no medal is approximately 1:2:3:6 (thus i.e. 1/12th of the contestants gets a gold medal). List of IOI websites and locations - IOI 2006 will be held in Mrida, Yucatn, Mexico, August 19-26, 2006
- IOI 2005 will be held in Nowy Sącz, Poland, August 18-25, 2005 http://www.ioi2005.pl/
- IOI 2004 was held in Athens, Greece, September 11-18, 2004 http://www.ioi2004.org/
- IOI 2003 was held in Wisconsin, USA, August 16-23, 2003 http://www.ioinformatics.org/ioi2003/
- IOI 2002 was held in Yong-In, Republic of Korea, August 18-25, 2002 http://www.ioi2002.or.kr/
- IOI 2001 was held in Tampere, Finland, July 14-21, 2001 http://www.ioi2001.edu.fi/
- IOI 2000 was held in Beijing, People's Republic of China, September 23-30, 2000 http://www.ioi2000.org.cn/
- IOI 1999 was held in Antalya-Belek, Turkey, October 9-16, 1999 http://www.ioi99.org.tr/
- IOI 1998 was held in Setbal, Portugal, September 5 - 12, 1998
- IOI 1997 was held in Cape Town, South Africa, November 30 - December 7, 1997
- IOI 1996 was held in Veszprm, Hungary, July 25 - August 2, 1996
- IOI 1995 was held in Eindhoven, The Netherlands, June 26 - July 3, 1995 http://olympiads.win.tue.nl/ioi95/
- IOI 1994 was held in Haninge, Sweden, July 3 - 10, 1994
- IOI 1993 was held in Mendoza, Argentina, October 16 - 25, 1993 http://www.ioi.org.ar/mendoza/
- IOI 1992 was held in Bonn, Germany, July 11 - 21, 1992
- IOI 1991 was held in Athens, Greece, May 19 - 25, 1991
- IOI 1990 was held in Minsk, Belorussian Republic, Soviet Union, July 15 - 21, 1990
- IOI 1989 was held in Pravetz, Bulgaria, May 16 - 19, 1989.
See also other science olympiads. See also External links
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