Due to the COVID-19 pandemic, IOI 2020 will be hosted by Singapore online. You can visit the event website, or scroll down to read about the IOI organization.

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Updates on IOI 2020 & 2021
 Dear Friends of IOI, We trust that you are managing well during this difficult period as the world fights the global COVID-19 pandemic.

IOI 2020 will be held online
 Dear friends of the IOI, This is a quick update from the IC concerning IOI 2020 and beyond. The IC held an online meeting on May 25.

 The booklet contains information on how to solve all six problems from IOI 2018, Japan - with detailed solutions and source code. This project was...

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IOI 2020 postponed
 Dear friends of IOI, As we are all aware, the international situation with COVID-19 isunpredictable and is changing rapidly. However challenging,...

Call for papers
 Dear IOI Colleagues, The 14th conference will be held concurrently with the 2020 International Olympiad in Informatics, taking place in Singapore,...


Azerbaijan hosted IOI 2019
 The International Olympiad in Informatics in 2019 was held from August 4 to August 11 in Azerbaijan.

The previous Olympiad was held in Japan
 IOI 2018 took place in Japan in September of 2018. The official website has more information.


International Olympiad in Informatics 2020
 IOI 2020 will be held by Singapore online, in September. Follow our news section to stay up to date.  安卓vpm软件

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 You can read more about the future organizers of the IOI on the Editions page.  Future event

IOI 2022 will be held in Indonesia
 Several other Olympiads have also been scheduled, including IOI 2023 in Hungary and IOI 2024 in Egypt.  Future event


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Not sure where to go? Click here to view some basic information on how to learn programming and prepare to win a medal at the IOI.


A couple of volunteers maintain a separate page with stats about people who participated at the International Olympiad in Informatics.


The IOI publishes a journal every year, with original high-quality scientific papers related to education, contests and algorithms.


Several International Olympiads in Informatics have been organized so far, hosted by a number of different countries.

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    IOI 1989, Bulgaria

  • IOI 1990, Soviet Union
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    IOI 1991, Greece
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    IOI 1992, Germany
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    IOI 1993, Argentina
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    IOI 1994, Sweden

  • IOI 1995, Netherlands

  • IOI 1996, Hungary

  • IOI 1997, South Africa

  • IOI 1998, Portugal

  • IOI 1999, Turkey

  • IOI 2000, China

  • IOI 2001, Finland

  • IOI 2002, Korea

  • IOI 2003, USA
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    IOI 2004, Greece

  • IOI 2005, Poland

  • IOI 2006, Mexico

  • IOI 2007, Croatia

  • IOI 2008, Egypt
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    IOI 2009, Bulgaria

  • IOI 2010, Canada

  • IOI 2011, Thailand

  • IOI 2012, Italy

  • IOI 2013, Australia

  • IOI 2014, Taiwan
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    IOI 2015, Kazakhstan
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    IOI 2016, Russia
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    IOI 2017, Iran

  • IOI 2018, Japan

  • IOI 2019, Azerbaijan
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    IOI 2020, Singapore*


The International Olympiad in Informatics is organized according to the IOI Regulations, and the decision made by the General Assembly.
On this site, you can find all regulations, minutes, and people involved with the organization.

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