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{{Infobox recurring event
| logo = 2023_topcoder_open_logo.svg
| name = Topcoder Open (TCO)
| logo_caption = 2023 Topcoder Open logo
| frequency = Annually
| country = United States
| years_active = 2001–2023
| first = November 2–3, 2001
| last = November 17–19, 2022
| activity = Competitive programming, data science, design, software development
| organized = [[Topcoder]]
| website = {{URL|https://tco23.topcoder.com}}
}}
'''Topcoder Open''' ('''TCO''') was an annual [[design]], [[software development]], [[data science]] and [[competitive programming]] [[championship]] organized by [[Topcoder]], and hosted in different venues around the [[United States]].<ref>{{Cite news|url=https://www.computerworld.com/article/2538717/app-development/rock-star-coders.html|title=Rock star coders|last=Brandel|first=Mary|date=January 22, 2008|work=Computerworld|access-date=April 29, 2018}}</ref><ref>{{Cite news|url=https://www.computerworld.com/article/2552789/it-management/jiazhi-wu--programming-s-crack-competitor.html|title=Jiazhi Wu: Programming's Crack Competitor|last=Lai|first=Eric|date=July 9, 2007|work=Computerworld|access-date=April 29, 2018}}</ref><ref>{{Cite news|url=https://medium.com/programming-and-algorithms-iitr/programming-as-a-sport-a5e75d292cab|title=Programming as a sport|last=Grover|first=Sahil|date=December 2, 2017|work=Medium|access-date=April 30, 2017}}</ref> In the first two years, 2001 and 2002, the tournament was titled TopCoder Invitational.
In addition to the main championship, from 2001 to 2007, Topcoder organized an annual TopCoder Collegiate Challenge tournament, for [[college]] students only.<ref name=":3">{{Cite news|url=http://www.oracle.com/technetwork/java/topcoder-141267.html?printOnly=1|title=TopCoders Vie For College Crown|last=Meloan|first=Steve|date=April 2003|work=Oracle Technology Network|access-date=April 30, 2018|archive-url=https://web.archive.org/web/20180430120057/http://www.oracle.com/technetwork/java/topcoder-141267.html?printOnly=1|archive-date=30 April 2018}}</ref><ref name=":4">{{Cite news|url=https://www.computerworld.com.au/article/196525/college_coders_vie_cash_enterprise-sponsored_contest/|title=College coders vie for cash in enterprise-sponsored contest|last=Kanaracus|first=Chris|date=October 1, 2007|work=Computerworld|access-date=April 30, 2018}}</ref> The TopCoder [[High School]] competition was held from 2007 to 2010.
From 2015, Topcoder Regional events were held through the year in different countries.<ref name=":5">{{Cite news|url=http://innovation.ifmo.ru/en/news_page/841/|title=TopCoder Open 2016|date=September 5, 2016|work=ITMO Tech|access-date=April 30, 2018}}</ref>
In 2020–2023, in-person Topcoder Open finals were cancelled and replaced by virtual events due to the impact of the [[COVID-19 pandemic]] and the subsequent economic slowdown. The 2023 Topcoder Open was the final edition of the contest.<ref>{{Cite web |date=February 24, 2023 |title=FAQ - TOPCODER COMMUNITY TOWN HALL WITH DOUG HANSON, TOPCODER CEO |url=https://discussions.topcoder.com/discussion/26097/faq-topcoder-community-town-hall-with-doug-hanson-topcoder-ceo |access-date=February 25, 2023 |website=Topcoder}}</ref>
== Competition
Competition tracks included in the Topcoder Open tournament changed through its history. Many of them resemble the types of challenges offered to [[Topcoder#Topcoder Community|Topcoder Community]] through the year, but there is no 1:1 match. Here is the alphabetical list of all competition tracks ever present at TCO:
=== Algorithm Competition (SRM) ===
'''Timeline:''' ''2001 – 2022''
'''Champions: {{Flagicon|Belarus}} '''[[Gennady Korotkevich]] ''tourist'' ('''2022''', '''2021''', '''2020''', '''2019''', '''2014'''); '''{{Flagicon|Russia}}''' [[Petr Mitrichev]] ''Petr'' ('''2018, 2015, 2013, 2006'''); {{Flagicon|China}} Yuhao Du ''xudyh'' ('''2017'''); {{Flagicon|Japan}} [[Makoto Soejima]] ''rng_58'' ('''2016''', '''2011''', '''2010'''); {{Flagicon|Russia}} Egor Kulikov ''Egor'' ('''2012'''); {{Flagicon|China}} Bin Jin ''crazyb0y'' ('''2009'''); {{Flagicon|Poland}} {{Ill|Tomasz Czajka|pl|Tomasz Czajka}} ''tomek'' ('''2008''', '''2004''', '''2003'''); {{Flagicon|Netherlands}} Jan Kuipers ''Jan_Kuipers'' ('''2007'''); {{Flagicon|Poland}} {{Ill|Eryk Kopczyński|pl|Eryk Kopczyński}} ''Eryx'' ('''2005'''); {{Flagicon|Australia}} John Dethridge ''John Dethridge'' ('''2002'''); {{Flagicon|USA}} ''jonmac'' ('''2001''').
'''Details:'''
This was the only track that was present at all main TCO events and at most of the other Topcoder events. It followed the format of regular 1.5 hours Single Round Matches:<ref>{{Cite web|url=https://help.topcoder.com/hc/en-us/articles/115006162527-SRM-Overview|title=SRM Overview|last=Sial|first=Rashid|date=April 25, 2017|website=Topcoder Help Center|access-date=April 23, 2018}}</ref>
* ''The Coding Phase –'' 75 mins'':'' All competitors were presented with the same three [[Algorithm|algorithmic]] problems of differing complexity. Each problem had its own maximal number of points. Problem descriptions were initially invisible. Competitors had 75 minutes to solve these problems. A competitor could open any problem description in any order; once they opened a problem, the number of points they could get for the correct solution of that problem started decreasing over time. When the competitor submitted the problem solution—a code that successfully compiles—they were awarded with the current number of points they could get for that problem. They could re-submit a solution, getting the further decrease number of points, minus extra penalty for the resubmission. During this coding phase, competitors could see the current points awarded to each participant, but they could not see whether the solutions of those participants were correct or incorrect, including whether these scores would hold after ''The System Testing Phase'' or if they would be reset.
* ''The Challenge Phase'' – 15 mins: Each competitor could see all submissions completed by the other competitors. They could optionally challenge any of them by submitting [[Test case (software)|test cases]] that would cause other competitor's submission to produce an incorrect result. Submission of a correct challenge test case gave the submitter a 50 points award, but submission of an incorrect test case (i.e. the challenged solution can solve it successfully) would lead to 25 points penalty for the test case submitter.
* ''The System Testing Phase'' – In the last phase, system tests were automatically executed for all of the submissions from all competitors. If a submission failed testing, the scores awarded for that submission during ''The Coding Phase'' were reset to zero. The final scores after the system testing determined the winner.
=== First to Finish (F2F) ===
'''Timeline:''' ''2009 – 2014, 2016 – 2022''
'''Champions:''' {{Flagicon|Turkey}} Fatih Tas ''neonray'' ('''2022''')'';'' '''{{Flagicon|Greece}}''' Thomas Kranitsas ''thomaskranitsas'' ('''2021'''); {{Flagicon|Brazil}} Victor Roberto Gomes da Cunha ''cunhavictor'' ('''2020'''); '''{{Flagicon|Nepal}}''' Dilip Kumar Thapa ''veshu'' ('''2019'''); {{Flagicon|Russia}} Dmitry Kondakov ''kondakovdmitry'' ('''2018'''); {{Flagicon|Nigeria}} Akinwale Ariwodola ''akinwale'' ('''2017''', '''2014'''); {{Flagicon|China}} ''vvvpig'' ('''2016'''); {{Flagicon|India}} Pratap Koritala ''supercharger'' ('''2013'''); {{Flagicon|China}} Lan Luo ''hohosky'' ('''2012'''); {{Flagicon|China}} Yang Li ''Yeung'' ('''2011'''); {{Flagicon|Ukraine}} Margaryta Skrypachova ''Margarita'' ('''2010'''); {{Flagicon|China}} Ninghai Huang ''PE'' ('''2009''').
'''Details:'''
This was officially called ''Mod Dash'' from 2009 to 2013, and ''First2Finish'' from then on. Competitors were provided with a set of small programming tasks, such as [[Bug fix|bug fixes]] or enhancements in an existing [[codebase]], and they received scores based on who correctly solved each task first. The exact rules for on-site competition varied from year to year.
=== Information Architecture ===
'''Timeline:''' ''2015 only.''
'''Champions:''' {{Flagicon|Spain}} Silvana Vacchina ''f0rc0d3r'' ('''2015''').
'''Details:'''
This provided competitors with client requirements for a [[software]] product, and they were asked to create a wireframe mockup of the future app or [[website]].
=== Marathon Match (MM) ===
'''Timeline:''' ''2007 – 2022''
'''Champions:''' {{Flagicon|Poland}} {{Ill|Przemysław Dębiak|pl|Przemysław Dębiak}} ''Psyho'' ('''2022''', '''2017''', '''2016''', '''2014''', '''2013''', '''2011''', '''2008'''); {{Flagicon|Romania}} Catalin-Stefan Tiseanu ''CatalinT'' ('''2021''');{{Flagicon|Japan}} Hironao Tsutsumida ''iehn'' ('''2020'''); {{Flagicon|Belarus}} [[Gennady Korotkevich]] ''tourist'' ('''2019''', '''2018'''); {{Flagicon|China}} [[Tiancheng Lou]] ''ACRush'' ('''2015'''); {{Flagicon|South Korea}} Won-Seok Yoo ''ainu7'' ('''2012'''); {{Flagicon|Japan}} Yoichi Iwata ''wata'' ('''2010'''); {{Flagicon|Russia}} [[Andrey Lopatin]] ''KOTEHOK'' ('''2009'''); {{Flagicon|Poland}} Mateusz Zotkiewicz ''Mojito1'' ('''2007''').
'''Details:'''
This was officially called ''Marathon'' from 2007 to 2022. It followed the format of regular MM competitions: 1–2 weeks for online competitions or 1 day during on-site competitions. Competitors were provided with the same algorithmic or [[data science]] problem, which was judged objectively with a live leaderboard which was visible to everyone. Each competitor could submit multiple times with no penalties, with the goal to submit a code that scores the maximal possible amount of scores on that problem. During the competition, the leaderboard was generated based on submissions testing against a limited number of test cases, and, after the contest, the final results were determined with testing against a larger test dataset.
=== Quality Assurance Competition (QA) ===
'''Timeline:''' 2019 – ''2022''
'''Champions:''' {{Flagicon|Sri Lanka}} Nuwan Gunarathne ''codejam'' ('''2022''', '''2021''', '''2020'''); {{Flagicon|Latvia}} Vladimir Timofejev ''v.t.'' ('''2019''')
'''Details:'''
The QA competition included structured and unstructured testing, structured test case writing, and automated testing.
=== Software Design ===
'''Timeline:''' ''2004–2014''
'''Champions:''' {{Flagicon|China}} Meng Wang ''albertwang'' ('''2014''', '''2013'''); {{Flagicon|Canada}} Michael Paweska ''argolite'' ('''2012''', '''2010'''); {{Flagicon|China}} WuJian Ye ''BLE'' ('''2011'''); {{Flagicon|Ukraine}} Olexiy Sadovnikov ''saarixx'' ('''2009'''); {{Flagicon|USA}} Tim Roberts ''Pops'' ('''2008''', '''2006'''); {{Flagicon|USA}} Sergey Kalinchenko ''kyky'' ('''2007'''); {{Flagicon|Russia}} Nikolay Archak ''nicka81'' ('''2005'''); {{Flagicon|Romania}} Adrian Carcu ''adic'' ('''2004''').
'''Details:'''
This was officially called Component Design from 2004 to 2009, and Design from 2010 to 2014. Competitors were asked to take client requirements for a software component or product as input and produce development documentation or technical specifications. Solutions were evaluated by a panel of judges according to objective scorecards.
=== Software Development ===
'''Timeline:''' ''2004 – 2022''
'''Champions:''' {{Flagicon|China}} ''xxcxy'' ('''2022'''); '''{{Flagicon|China}} '''Jiang Liwu ''jiangliwu'' ('''2021''', '''2019'''); '''{{Flagicon|Spain}}''' Dr. Sergey Pogodin ''birdofpreyru'' ('''2020''', '''2017'''); {{Flagicon|Vietnam}} Ngoc Pham ''ngoctay'' ('''2018'''); {{Flagicon|Poland}} Łukasz Sentkiewicz ''Sky_'' ('''2016''', '''2015''', '''2014'''); {{Flagicon|China}} Zhijie Liu ''morehappiness'' ('''2013'''); {{Flagicon|China}} Yang Li ''Yeung'' ('''2012''', '''2010'''); {{Flagicon|Philippines}} Franklin Guevarra ''j3_guile'' ('''2011'''); {{Flagicon|China}} GuanZhuo Jin ''Standlove'' ('''2009''' – ''Architecture'', '''2004'''); {{Flagicon|Argentina}} Pablo Wolfus ''pulky'' ('''2009''' – ''Assembly'')'';'' {{Flagicon|China}} Yanbo Wu ''assistant'' ('''2009''' – ''Component Development'')'';'' {{Flagicon|Canada}} Piotr Paweska ''AleaActaEst'' ('''2009''' – ''Specification''); {{Flagicon|Brazil}} Romano Silva ''romanoTC'' ('''2008'''); {{Flagicon|China}} Feng He ''hefeng'' ('''2007'''); {{Flagicon|Indonesia}} Sindunata Sudarmagi ''sindu'' ('''2006'''); {{Flagicon|China}} Qi Liu ''visualage'' ('''2005''').
'''Details:'''
This was officially called ''Component Development'' from 2004 to 2009, and ''Development'' from 2010 to 2022. The actual rules differed from year to year, but, typically, competitors were presented with technical specifications for development of a software component, application, or tool, or they were presented with more open, [[hackathon]]-style requirements, which they must implement in the best possible way in 4 hours. Submitted solutions were evaluated by a panel of judges according to objective scorecards.
=== UI Design ===
'''Timeline:''' ''2007 – 2022''
'''Champions:''' {{Flagicon|Thailand}} Teeraporn Sriponpak ''iamtong'' ('''2022''', '''2021''', '''2020''', '''2018,''' '''2012'''); {{Flagicon|India}} ''L. O. I.'' ('''2019'''); {{Flagicon|Indonesia}} Panji Kharisma ''kharm'' ('''2017'''); {{Flagicon|Indonesia}} Junius Albertho ''abedavera'' ('''2016''', '''2015''', '''2013''', '''2011'''); {{Flagicon|Indonesia}} Faridah Amalia Mandaga ''fairy_ley'' ('''2014'''); {{Flagicon|Indonesia}} Tri Joko Rubiyanto ''djackmania'' ('''2010'''); {{Flagicon|Australia}} Dale Napier ''djnapier'' ('''2009'''); {{Flagicon|Philippines}} Nino Rey Ronda ''oninkxronda'' ('''2008'''); {{Flagicon|China}} Yiming Liao ''yiming'' ('''2007''').
'''Details:'''
The event was officially called ''Studio'' from 2007 to 2014, and ''UI Design'' from 2015 onwards. Competitors, provided with client requirements, were asked to create the best [[user interface]] design for a software product.
=== UI Prototype ===
'''Timeline:''' ''2015–2018''
'''Champions:''' {{Flagicon|Sri Lanka}} Mouly Gunarathne ''moulyg'' ('''2018,''' '''2017''', '''2016'''); {{Flagicon|Sri Lanka}} Dileepa Balasuriya ''dileepa'' ('''2015''').
'''Details:'''
Competitors were provided with design specifications for a website or [[Web application|web-application]], and they were required to create a working [[prototype]] of the [[Frontend and backend|frontend]] within approximately 4 hours. The resulting submissions were judged against objective scorecards.
== List of Topcoder Open events ==
These are the main Topcoder Open events where champions were determined.
{| class="wikitable mw-collapsible"
! colspan="4" |The list of Topcoder Open
|-
!Date
!Event
!Venue
!Competition Tracks,<ref group="note" name=":0">The following abbreviations are used in the table "''The list of Topcoder Open and Regional events''": '''Dev''' = Software Development (Code); '''Dg''' = UI Design (also called as Studio Design); '''DS''' = Data Science; '''F2F''' = First to Finish (also called Mod Dash); '''IA''' = Information Architecture (Wireframes); '''MM''' = Marathon Match; '''Pr''' = UI Prototype; '''QA''' = Quality Assurance Competition; '''SDg''' = Software Design (also called Component Design, and just Design); '''SRM''' = Algorithm.</ref> and
|-
|
|TCO22 (online)<ref>{{Cite web|title=2022 Topcoder Open|url=https://tco22.topcoder.com/}}</ref>
|Online
|'''Dev''' ({{Flagicon|China}} ''xxcxy''), '''Dg''' ({{Flagicon|Thailand}} Teeraporn Sriponpak ''iamtong''), '''F2F''' ({{Flagicon|Turkey}} Fatih Tas ''neonray''), '''MM''' ({{Flagicon|Poland}} {{Ill|Przemysław Dębiak|pl|Przemysław Dębiak}} ''Psyho''), '''QA''' ({{Flagicon|Sri Lanka}} Nuwan Gunarathne ''codejam''), '''SRM''' ({{Flagicon|Belarus}} [[Gennady Korotkevich]] ''tourist'')
|-
|Nov 13–20, 2021
|TCO21 (online)<ref>{{Cite web |title=2021 Topcoder Open |url=https://tco21.topcoder.com/ }}</ref>
|Online
|'''Dev''' ({{Flagicon|China}} Jiang Liwu ''jiangliwu''), '''Dg''' ({{Flagicon|Thailand}} Teeraporn Sriponpak ''iamtong''), '''F2F''' ('''{{Flagicon|Greece}}''' Thomas Kranitsas ''thomaskranitsas''), '''MM''' ({{Flagicon|Romania}} Catalin-Stefan Tiseanu ''CatalinT''), '''QA''' ({{Flagicon|Sri Lanka}} Nuwan Gunarathne ''codejam''), '''SRM''' ({{Flagicon|Belarus}} [[Gennady Korotkevich]] ''tourist'')
|-
|
|
|Online, at [https://hopin.com/ hopin.to] platform.
|'''Dev''' ({{Flagicon|Spain}} Sergey Pogodin ''birdofpreyru''), '''Dg''' ({{Flagicon|Thailand}} Teeraporn Sriponpak ''iamtong''), '''F2F''' ({{Flagicon|Brazil}} Victor Roberto Gomes da Cunha ''cunhavictor''), '''MM''' ({{Flagicon|Japan}} Hironao Tsutsumida ''iehn''), '''QA''' ({{Flagicon|Sri Lanka}} Nuwan Gunarathne ''codejam''), '''SRM''' ({{Flagicon|Belarus}} [[Gennady Korotkevich]] ''tourist'')
|-
|
|
|InterContinental Houston – Medical Center
|'''Dev''' ({{Flagicon|
|-
|
|TCO18 (Dallas, TX, USA)<ref>{{Cite web|url=https://tco18.topcoder.com/|title=Topcoder Open 2018}}</ref><ref>{{Cite web|url=http://tco18.topcoder.com/overview/tco-at-the-ranch/|title=TCO at the Ranch|website=Topcoder Open 2018|access-date=July 9, 2018}}</ref><ref>{{Cite news|url=http://news.ifmo.ru/en/university_live/achievements/news/8015/|title=Gennadiy Korotkevich Wins 2018 Topcoder Open Marathon|date=November 19, 2018|work=ITMO.News|access-date=November 23, 2018}}</ref><ref>{{Cite web|url=https://devops.com/crowdsourcing-data-science-top-talks-at-the-2018-topcoder-open/|title=Crowdsourcing, Data Science Top Talks at the 2018 Topcoder Open|last=Ford|first=Jessie|date=December 13, 2018|website=DevOps.com|access-date=December 13, 2018}}</ref>
|[[Southfork Ranch]]
|'''Dev''' ({{Flagicon|
|-
|
|TCO17 (Buffalo, NY, USA)<ref>{{Cite web|url=https://tco17.topcoder.com/|title=Topcoder Open 2017}}</ref><ref>{{Cite news|url=https://bnmc.org/topcoder-open-2017/|title=Impact of 2017 Topcoder Open on Our Community|date=December 7, 2017|work=Buffalo Niagara Medical Campus Blog|access-date=April 14, 2018}}</ref><ref>{{Cite news|url=http://www.upstartny.org/inthenews/Topcoder-contest-preview.aspx|title=Medical Campus brings best in the world to Buffalo for coding event|last=Lehman|first=Jeol|date=October 6, 2017|work=Upstart NY|access-date=April 14, 2018}}</ref><ref>{{Cite news|url=http://buffaloptorg.wixsite.com/buffalopto/single-post/2017/10/26/BPS-Student-James-Shippens-Takes-1st-Place-in-Topcoder-Open|title=BPS Student James Shippens Takes 1st Place In Topcoder Open|last=Shippens|first=Eve|date=October 26, 2017|work=BPTO – Buffalo Parent-Teacher Organization|access-date=April 14, 2018}}</ref>
|[[Buffalo Niagara Medical Campus]]
|'''Dev''' ({{Flagicon|
|-
|
|TCO16 (Washington DC, USA)<ref>{{Cite web|url=http://tco16.topcoder.com/|title=Topcoder Open 2016}}</ref>
|[[Booz Allen Hamilton]] Innovation Center
|'''Dev''' ({{Flagicon|Poland}} Łukasz Sentkiewicz ''Sky_''), '''Dg''' ({{Flagicon|Indonesia}} Junius Albertho ''abedavera''), '''F2F''' ({{Flagicon|China}} ''vvvpig''), '''MM''' ({{Flagicon|Poland}} {{Ill|Przemysław Dębiak|pl|Przemysław Dębiak}} ''Psyho''), '''Pr''' ({{Flagicon|Sri Lanka}} Mouly Gunarathne ''moulyg''), '''SRM''' ({{Flagicon|Japan}} [[Makoto Soejima]] ''rng_58'')
|-
|
|TCO15 (Indianapolis, IN, USA)<ref name=":19" /><ref name=":1" group="note" />
|Omni Severin Hotel
|'''Dev''' ({{Flagicon|Poland}} Łukasz Sentkiewicz ''Sky_''), '''IA''' ({{Flagicon|Spain}} Silvana Vacchina ''f0rc0d3r''), '''MM''' ({{Flagicon|China}} [[Tiancheng Lou|TianCheng Lou]] ''ACRush''), '''SRM''' ({{Flagicon|Russia}} [[Petr Mitrichev]] ''Petr'')
|-
|Sep 21–22, 2015
|TCO15 – Yogyakarta (Indonesia)<ref name=":19">{{Cite web|url=http://tco15.topcoder.com/|title=Topcoder Open 2015|access-date=April 16, 2018}}</ref><ref name=":1" group="note">In 2015, on-site finals for UI Design and UI Prototype competitions were held at TCO15 Yogyakarta event; and other on-site finals: Competitive Programming (SMR), Information Architecture, Marathon Match, Software Development were held at TCO15 Indianapolis event.</ref>
|Eastparc Hotel
|'''Dg''' ({{Flagicon|Indonesia}} Junius Albertho ''abedavera''), '''Pr''' ({{Flagicon|Sri Lanka}} Dileepa Balasuriya ''dileepa'')
|-
|Nov 16–19, 2014
|TCO14 – San Francisco (CA, USA)<ref name=":2">{{Cite news|date=August 27, 2015|title=Poland has the world's best programmers – and here's proof|work=Medium|url=https://medium.com/@webgovpl/poland-has-the-world-s-best-programmers-and-here-s-proof-5ee0628b916e|access-date=April 30, 2018}}</ref><ref name=":7">{{Cite news|last=Weinberger|first=Matt|date=November 18, 2014|title=Microsoft: "Nobody loves developers more than us"|work=Computerworld|url=https://www.computerworld.com/article/2848877/microsoft-nobody-loves-developers-more-than-us.html|access-date=April 30, 2018}}</ref><ref>{{Cite web|url=https://tccommunity.wpengine.com/tco14/overview/|title=Topcoder Open 2014|access-date=April 16, 2018}}</ref><ref>{{Cite news|url=https://www.prnewswire.com/news-releases/appirio-and-industry-leaders-host-2014-topcoder-open-to-celebrate-how-developers-are-changing-the-world-280765642.html|title=Appirio and Industry Leaders Host 2014 Topcoder Open to Celebrate How Developers Are Changing the World|date=October 29, 2014|work=CISION PR Newswire|access-date=April 23, 2018}}</ref>
|Pier 48
|'''Dev''' ({{Flagicon|Poland}} Łukasz Sentkiewicz ''Sky_''), '''Dg''' ({{Flagicon|Indonesia}} Faridah Amalia Mandaga ''fairy_ley''), '''F2F''' ({{Flagicon|Nigeria}} Akinwale Ariwodola ''akinwale''), '''MM''' ({{Flagicon|Poland}} {{Ill|Przemysław Dębiak|pl|Przemysław Dębiak}} ''Psyho''), '''SDg''' ({{Flagicon|China}} Meng Wang ''albertwang''), '''SRM''' ({{Flagicon|Belarus}} [[Gennady Korotkevich]] ''tourist'')
|-
|Nov 10–14, 2013
|TCO13 (Washington DC, USA)<ref>{{Cite web|url=http://tccommunity.wpengine.com/tco13|title=Topcoder Open 2013|access-date=April 18, 2018}}</ref><ref>{{Cite news|url=http://www.marketwired.com/press-release/leaders-in-change-and-innovation-to-keynote-topcoder-open-innovation-summit-1841086.htm|title=Leaders in Change and Innovation to Keynote TopCoder Open Innovation Summit|date=October 15, 2013|work=Market Wire|access-date=April 23, 2018}}</ref>
|Capital Hilton Hotel
|'''Dev''' ({{Flagicon|China}} Zhijie Liu ''morehappiness''), '''Dg''' ({{Flagicon|Indonesia}} Junius Albertho ''abedavera''), '''F2F''' ({{Flagicon|India}} Pratap Koritala ''supercharger''), '''MM''' ({{Flagicon|Poland}} {{Ill|Przemysław Dębiak|pl|Przemysław Dębiak}} ''Psyho''), '''SDg''' ({{Flagicon|China}} Meng Wang ''albertwang''), '''SRM''' ({{Flagicon|Russia}} [[Petr Mitrichev]] ''Petr'')
|-
|Sep 30 – October 4, 2012
|TCO12 (Orlando, FL, USA)<ref>{{Cite web|url=http://tccommunity.wpengine.com/tco12/|title=2012 TopCoder Open|access-date=April 22, 2018}}</ref><ref>{{Cite news|url=http://scienceinpoland.pap.pl/en/node/22828|title=Polish vice champions of TopCoder Open|date=October 19, 2012|work=Science in Poland|access-date=April 29, 2018}}</ref>
|Caribe Royale Hotel
|'''Dev''' ({{Flagicon|China}} Yang Li ''Yeung''), '''Dg''' ({{Flagicon|Thailand}} Teeraporn Sriponpak ''iamtong''), '''F2F''' ({{Flagicon|China}} Kan Luo ''hohosky''), '''MM''' ({{Flagicon|South Korea}} Won-Seok Yoo ''ainu7''), '''SDg''' ({{Flagicon|Canada}} Michael Paweska ''argolite''), '''SRM''' ({{Flagicon|Russia}} Egor ''Egor'')
|-
|Sep 25–28, 2011
|TCO11 (Hollywood, FL, USA)<ref>{{Cite web|url=http://tccommunity.wpengine.com/tco11/|title=2011 TopCoder Open|access-date=April 22, 2018}}</ref>
|[[Diplomat Resort & Spa Hollywood|Westin Diplomat Resort & Spa]]
|'''Dev''' ({{Flagicon|Philippines}} Franklin Guevarra ''j3_guile''), '''Dg''' ({{Flagicon|Indonesia}} Junius Albertho ''abedavera''), '''F2F''' ({{Flagicon|China}} Yang Lee ''Yeung''), '''MM''' ({{Flagicon|Poland}} {{Ill|Przemysław Dębiak|pl|Przemysław Dębiak}} ''Psyho''), '''SDg''' ({{Flagicon|China}} WuJian Ye ''BLE''), '''SRM''' ({{Flagicon|Japan}} [[Makoto Soejima]] ''rng_58'')
|-
|Oct 11–14, 2010
|TCO10 (Las Vegas, NV, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco10&d3=overview&d4=overview|title=2010 TopCoder Open|access-date=April 22, 2018}}</ref>
|[[The Mirage]]
|'''Dev''' ({{Flagicon|China}}
|-
|Jun 1–4, 2009
|
|[[The Mirage]]
|'''Dev<ref group="note">Software development competition that year was online-only, and it was divided into Architecture, Assembly, Component Design, Component Development, and Specification sub-tracks.</ref>''' (Architecture: {{Flagicon|China}}
|-
|May 11–15, 2008
|TCO08 (Las Vegas, NV, USA)<ref name=":1">{{Cite news|date=June 3, 2008|title=Two Filipinos win in 2008 International Software Component Design Competition|work=Philippine Information Agency|url=http://archives.pia.gov.ph/?m=12&sec=reader&rp=2&fi=p080603.htm&no=15&date=06/03/2008|access-date=April 30, 2018}}</ref><ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco08&d3=about|title=2008 TopCoder Open
|[[The Mirage]]
|'''Dev''' ({{Flagicon|Brazil}} Romano Silva ''romanoTC''), '''Dg''' ({{Flagicon|Philippines}} Nino Rey Ronda ''oninkxronda''), '''MM''' ({{Flagicon|Poland}}
|-
|
|
|[[The Mirage]]
|'''Dev
|-
|May 3–5, 2006
|TCO06 (Las Vegas, NV, USA)<ref name=":6">{{Cite news|last=Havenstein|first=Heather|date=May 9, 2006|title=Programming contest garners enterprise interest|work=Computerworld|url=https://www.computerworld.com/article/2549621/app-development/programming-contest-garners-enterprise-interest.html|access-date=April 29, 2018}}</ref><ref name=":8">{{Cite news|last=Krazit|first=Tom|date=May 3, 2006|title=Coding for fame, and dollars|work=C{{!}}Net|url=https://www.cnet.com/news/coding-for-fame-and-dollars/|access-date=April 30, 2018}}</ref><ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco06&d3=about|title=2006 TopCoder Open Sponsored by AMD|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2005 TopCoder Open Sponsored by AMD''</ref>
|[[Planet Hollywood Las Vegas|Aladdin Resort and Casino]]
|'''Dev''' ({{Flagicon|Indonesia}} Sindunata Sudarmagi ''sindu''), '''SDg''' ({{Flagicon|USA}} Tim Roberts ''Pops''), '''SRM''' ({{Flagicon|Russia}} [[Petr Mitrichev]] ''Petr'')
|-
|
|TCO05 (Santa Clara, CA, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco05&d3=about|title=2005 TopCoder Open Sponsored by Sun Microsystems|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2005 TopCoder Open Sponsored by Sun Microsystems''</ref>
|Santa Clara Marriot
|'''Dev''' ({{Flagicon|China}} Qi Liu ''visualage''), '''SDg''' ({{Flagicon|Russia}} Nikolay Archak ''nicka81''), '''SRM''' ({{Flagicon|Poland}} {{Ill|Eryk Kopczyński|pl|Eryk Kopczyński}} ''Eryx'')
|-
|
|TCO04 (Santa Clara, CA, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco04&d3=about|title=TopCoder Open 2004|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2004 TopCoder Open Sponsored by Microsoft''</ref>
|Santa Clara Marriot
|'''Dev''' ({{Flagicon|China}} GuanZhuo Jin ''Standlove''), '''SDg''' ({{Flagicon|Romania}} Adrian Carcu ''adic''), '''SRM''' ({{Flagicon|Poland}} {{Ill|Tomasz Czajka|pl|Tomasz Czajka}} ''tomek'')
|-
|
|
|[[Mohegan Sun]] Casino
|'''SRM''' ({{Flagicon|Poland}} {{Ill|Tomasz Czajka|pl|Tomasz Czajka}} ''tomek'')
|-
|
|
|[[Mohegan Sun]] Casino
|'''SRM''' ({{Flagicon|Australia}} John Dethridge ''John Dethridge'')
|-
|
|
|[[Foxwoods Resort Casino]]
|'''SRM''' ({{Flagicon|USA}} ''jonmac'')
|}
== Topcoder Open victories by countries represented by champions ==
{| class="wikitable mw-collapsible"
! colspan="11" |Topcoder Open Victories by Countries Represented by Champions<ref group="note">Updated up to TCO22, inclusive</ref>
|-
! rowspan="2" |Country
! rowspan="2" |Total
! colspan="9" |Competition Tracks<ref name=":0" group="note" />
|-
!Dev
!Dg
!F2F
!IA
!MM
!Pr
!QA
!SDg
!SRM
|-
|{{Flagicon|Argentina}} Argentina
|1
|1
|
|
|
|
|
|
|
|
|-
|{{Flagicon|Australia}} Australia
|2
|
|1
|
|
|
|
|
|
|1
|-
|{{Flagicon|Belarus}} Belarus
|7
|
|
|
|
|2
|
|
|
|5
|-
|{{Flagicon|Brazil}} Brazil
|2
|1
|
|1
|
|
|
|
|
|
|-
|{{Flagicon|Canada}} Canada
|3
|1
|
|
|
|
|
|
|2
|
|-
|{{Flagicon|China}} China
|22
|11
|1
|4
|
|1
|
|
|3
|2
|-
|{{Flagicon|Greece}} Greece
|1
|
|
|1
|
|
|
|
|
|
|-
|{{Flagicon|India}} India
|2
|
|1
|1
|
|
|
|
|
|
|-
|{{Flagicon|Indonesia}} Indonesia
|8
|1
|7
|
|
|
|
|
|
|
|-
|{{Flagicon|Japan}} Japan
|5
|
|
|
|
|2
|
|
|
|3
|-
|{{Flagicon|Latvia}} Latvia
|1
|
|
|
|
|
|
|1
|
|
|-
|{{Flagicon|Nepal}} Nepal
|1
|
|
|1
|
|
|
|
|
|
|-
|{{Flagicon|Netherlands}} Netherlands
|1
|
|
|
|
|
|
|
|
|1
|-
|{{Flagicon|Nigeria}} Nigeria
|2
|
|
|2
|
|
|
|
|
|
|-
|{{Flagicon|Philippines}} Philippines
|2
|1
|1
|
|
|
|
|
|
|
|-
|{{Flagicon|Poland}} Poland
|15
|3
|
|
|
|8
|
|
|
|4
|-
|{{Flagicon|Romania}} Romania
|2
|
|
|
|
|1
|
|
|1
|
|-
|{{Flagicon|Russia}} Russia
|8
|
|
|1
|
|1
|
|
|1
|5
|-
|{{Flagicon|South Korea}} South Korea
|1
|
|
|
|
|1
|
|
|
|
|-
|{{Flagicon|Spain}} Spain
|3
|2
|
|
|1
|
|
|
|
|
|-
|{{Flagicon|Sri Lanka}} Sri Lanka
|7
|
|
|
|
|
|4
|3
|
|
|-
|{{Flagicon|Thailand}} Thailand
|5
|
|5
|
|
|
|
|
|
|
|-
|{{Flagicon|Turkey}} Turkey
|1
|
|
|1
|
|
|
|
|
|
|-
|{{Flagicon|Ukraine}} Ukraine
|2
|
|
|1
|
|
|
|
|1
|
|-
|{{Flagicon|Vietnam}} Vietnam
|1
|
|
|
|
|
|
|
|
|
|-
|{{Flagicon|USA}} USA
|4
|
|
|
|
|
|
|
|3
|1
|}
Line 301 ⟶ 574:
== References ==
{{reflist}}
[[Category:Programming contests]]
| |||