IOI (36 contests)
IOI 2024
Was held
in
Alexandria, Egypt
on Sept. 6, 2024
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
1
| Kangyang Zhou | |
|
2
| Adam Gąsienica-Samek | |
|
3
| Brian Xue |
IOI 2023
Was held
in
Szeged, Hungary
on Sept. 4, 2023
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Tingqiang Xu | |
|
2
| Siyuan Cheng | |
|
3
| Antoni Buraczewski |
IOI 2022
Was held
in
Yogyakarta and Online, Indonesia
on Aug. 15, 2022
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1 - 2
| Jiangqi Dai | |
|
1 - 2
| Shaoxuan Tang | |
|
3 - 4
| Hangrui Zhou | |
|
3 - 4
| Junkai Zhang |
IOI 2021
Was held
Online
on June 25, 2021
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Mingyang Deng | |
|
2
| Yi Qian | |
|
3
| Chenxin Dai |
IOI 2020
Was held
Online
on Sept. 19, 2020
Top-6 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| William Lin | |
|
2
| Eun Soo Choe | |
|
3 - 6
| Harris Leung | |
|
3 - 6
| Yuxiang Luo | |
|
3 - 6
| Yuyang Zhou | |
|
3 - 6
| Zhanpeng Wang |
IOI 2019
Was held
in
Baku, Azerbaijan
on Aug. 11, 2019
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Benjamin Qi | |
|
2
| Ildar Gainullin | |
|
3
| Zixiang Zhou |
IOI 2018
Was held
in
Tsukuba, Japan
on Sept. 8, 2018
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Benjamin Qi | |
|
2
| Maolong Yang | |
|
3
| Zhenting Zhu |
IOI 2017
Was held
in
Tehran, Iran
on Aug. 4, 2017
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Yuta Takaya | |
|
2
| Mingkuan Xu | |
|
3
| Zhezheng Luo |
IOI 2016
Was held
in
Kazan, Russia
on Aug. 19, 2016
IOI 2015
Was held
in
Almaty, Kazakhstan
on Aug. 2, 2015
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Jeehak Yoon | |
|
2
| Mikhail Ipatov | |
|
3
| Andrew He |
IOI 2014
Was held
in
Taipei, Taiwan
on July 20, 2014
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1 - 3
| Ishraq Huda | |
|
1 - 3
| Scott Wu | |
|
1 - 3
| Yinzhan Xu |
IOI 2013
Was held
in
Brisbane, Australia
on July 13, 2013
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Lijie Chen | |
|
2
| Mingda Qiao | |
|
3 - 4
| Haoran Xu | |
|
3 - 4
| Nikolay Kalinin |
IOI 2012
Was held
in
Sirmione and Montichiari, Italy
on Sept. 30, 2012
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Johnny Ho | |
|
2
| Gennady Korotkevich | |
|
3
| Yuzhou Gu |
IOI 2011
Was held
in
Pattaya, Thailand
on July 29, 2011
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Gennady Korotkevich | |
|
2
| Haoqiang Fan | |
|
3 - 4
| Felipe Abella Cavalcante Mendonca de Souza | |
|
3 - 4
| Pavel Kunyavskiy |
IOI 2010
Was held
in
Waterloo, ON, Canada
on Aug. 21, 2010
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Gennady Korotkevich | |
|
2
| Rumen Hristov | |
|
3
| Adrian Jaskolka |
IOI 2009
Was held
in
Plovdiv, Bulgaria
on Aug. 15, 2009
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Gennady Korotkevich | |
|
2
| Kazuhiro Hosaka | |
|
3 - 4
| YiHan Gao | |
|
3 - 4
| Zi Chao Qi |
IOI 2008
Was held
in
Cairo, Egypt
on Aug. 23, 2008
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Huacheng Yu | |
|
2
| Panupong Pasupat | |
|
3 - 4
| Dong Zhou | |
|
3 - 4
| Marcin Koscielnicki |
IOI 2007
Was held
in
Zagreb, Croatia
on Aug. 22, 2007
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Tomasz Kulczynski | |
|
2
| Yi Yang | |
|
3
| Huayang Guo |
IOI 2006
Was held
in
Mérida, Mexico
on Aug. 20, 2006
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Filip Wolski | |
|
2
| Jae Hyun Park | |
|
3
| Fan Long |
IOI 2005
Was held
in
Nowy Sącz, Poland
on Aug. 25, 2005
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1 - 4
| Eric Price | |
|
1 - 4
| Weidong Hu | |
|
1 - 4
| Yuan Zhou | |
|
1 - 4
| Yuriy Znovyak |
IOI 2004
Was held
in
Athens, Greece
on Sept. 18, 2004
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Paul Jefferys | |
|
2
| Weidong Hu | |
|
3
| Tiancheng Lou |
IOI 2003
Was held
in
Kenosha, WI, United States
on Aug. 23, 2003
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Hwan-Seung Yeo | |
|
2
| Ivaylo Riskov | |
|
3
| Thomas Wuerthinger |
IOI 2002
Was held
in
Yong-In, South Korea
on Aug. 25, 2002
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Wan Yeong Jung | |
|
2
| Pawel Parys | |
|
3
| Velin Tzanov |
IOI 2001
Was held
in
Tampere, Finland
on July 21, 2001
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Reid Barton | |
|
2
| Mihai Patrascu | |
|
3
| Ziqing Mao |
IOI 2000
Was held
in
Beijing, China
on Sept. 30, 2000
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Mikhail Baoutine | |
|
2 - 4
| David Arthur | |
|
2 - 4
| David Pritchard | |
|
2 - 4
| Hong Chen |
IOI 1999
Was held
in
Antalya-Belek, Turkey
on Oct. 16, 1999
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Hong Chen | |
|
2 - 3
| Mathijs Vogelzang | |
|
2 - 3
| Roman Pastoukhov |
IOI 1998
Was held
in
Setúbal, Portugal
on Sept. 12, 1998
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1 - 4
| Daniel Wright | |
|
1 - 4
| Mihai Stroe | |
|
1 - 4
| Vladimir Martianov | |
|
1 - 4
| Zhunping Zhang |
IOI 1997
Was held
in
Cape Town, South Africa
on Dec. 7, 1997
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Vladimir Martianov | |
|
2
| Janis Sermulins | |
|
3
| Oleg Murk |
IOI 1996
Was held
in
Veszprém, Hungary
on Aug. 2, 1996
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Daniel Kral | |
|
2
| Xiaochuan Wang | |
|
3
| Piotr Zielinski |
IOI 1995
Was held
in
Eindhoven, Netherlands
on July 3, 1995
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Victor Bargatchev | |
|
2
| Patrick Smears | |
|
3
| Gabor Kovacs |
IOI 1994
Was held
in
Haninge, Sweden
on July 10, 1994
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Victor Bargatchev | |
|
2
| Walter Hofmann | |
|
3
| Roman Elizarov |
IOI 1993
Was held
in
Mendoza, Argentina
on Oct. 25, 1993
Top-4 winners:
| Rank | Country | Name |
|---|---|---|
|
1 - 4
| Fredrik Huss | |
|
1 - 4
| Martin Mares | |
|
1 - 4
| Mehdi Foladgar | |
|
1 - 4
| Radu-Lucian Lupsa |
IOI 1992
Was held
in
Bonn, Germany
on July 21, 1992
Top-12 winners:
| Rank | Country | Name |
|---|---|---|
|
1 - 12
| Bom Jun Kim | |
|
1 - 12
| Fredrik Huss | |
|
1 - 12
| Gao Chen | |
|
1 - 12
| Jittat Fakcharoenphol | |
|
1 - 12
| Laszlo Peter | |
|
1 - 12
| Matej Ondrusek | |
|
1 - 12
| Nathan Bronson | |
|
1 - 12
| Pinit Asavanuchit | |
|
1 - 12
| Shawn Smith | |
|
1 - 12
| Viet Nguyen Tuan | |
|
1 - 12
| Xing Wu | |
|
1 - 12
| Yunhe Yang |
IOI 1991
Was held
in
Athens, Greece
on May 25, 1991
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Igor Maly | |
|
2
| Yang Cheng | |
|
3
| Zoltan Turanyi |
IOI 1990
Was held
in
Minsk, Soviet Union
on July 21, 1990
Top-3 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Tzvetomir Petrov | |
|
2
| Fridtjof Siebert | |
|
3
| Teodor Tonchev |
IOI 1989
Was held
in
Pravetz, Bulgaria
on May 19, 1989
Top-6 winners:
| Rank | Country | Name |
|---|---|---|
|
1
| Teodor Tonchev | |
|
2 - 6
| Andrius Cepaitis | |
|
2 - 6
| Daniel Szabo | |
|
2 - 6
| Emanuel Todorov | |
|
2 - 6
| Igor Maly | |
|
2 - 6
| Markus Kuhn |