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Topcoder Open (TCO) is an annual design, software development, data science and competitive programming championship, organized by Topcoder, and hosted in different venues around US. Each year, the most successful participants of each competition track included into TCO are selected and invited for a free one-week trip to on-site finals, where they compete for prizes, and also socialize with each other, helping to build community sprit among the most active members. In the first two years, 2001 and 2002, the tournament was titled TopCoder Invitational.
In addition to the main chamionship, from 2001 to 2007 Topcoder was organizing an annual TopCoder Collegiate Challenge tournament, for college students only. Also from 2007 to 2010 TopCoder High School competition was held.
From 2015, Topcoder Regional events are held through the year in different countries.
=== Competition Tracks ===
Competition tracks included in Topcoder Open tournament changed through its history. Many of them resemble the types of challenges offered to 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 Compeition (SRM)''' – 2001 - nowadays – The only track that was present at all main TCOs events, and at the most of other Topcoder events. Follows the format of regular 1.5 hours Single Round Matches:<ref name=":22" />
** ''The Coding Phase –'' 75 mins'':'' All competitors are presented with the same three algorithmic problems of different complexity, each problem has its own maximal number of points. Problem descriptions are initially invisible. Competitors have 75 minutes to solve these problems. Competitor can open any problem description in any order; once he opened a problem, the number of points he can get for the correct solution of that problem starts decreasing over time. When competitor submits problem solution (a code that successfully compiles), he is awarded with the current amount of points he can get for that problem. He can re-submit a solution, getting the further descrease amount of points, minus extra penalty for the resubmission. During the phase competitors can see the current points awarded to each participant, but they don't know whether solutions of those participants are correct or wrong, thus whether these scores will hold after ''The System Testing Phase'', or will be reset.
** ''The Challenge Phase'' – 15 mins: Each competitor can see all submission done by other competitors. He can (optionally) challenge any of them, submitting test cases that will cause other competitor's submission produce a wrong result. Submission of correct challenge test case gives sumitter 50 points award, submission of an incorrect test case (i.e. the challenged solution can solve it successfully) will lead to 25 points penalty for the test case submitter.
** ''The System Testing Phase'' – In the last phase system tests are automatically executed for all submissions from all competitors. If a submission fails testing, the scores awarded for that submission during ''The Coding Phase'' are reset to zero. The final scores after the system testing determine the winner.
* '''First to Finish (F2F)''' – 2009 - nowadays – Officially called as ''Mod Dash'' from 2009 to 2013, and ''First2Finish'' afterwards. Competitors are provided with set of small programming tasks (like bug fixes / enhancements in an existing codebase), and they get scores based on who correctly resolves each task first. The exact rules for on-site competition may vary from year to year.
* '''Information Architecture''' – 2015. Provided with client requirements for a software product, competitors are asked to create a wireframe mockup of the future app / website.
* '''Marathon Match (MM)''' – 2007 - nowadays – Officially called as just ''Marathon'' from 2007 to nowadays. Follows the format of regular MM competitions (a 1-2 weeks long online, and 1 day long during on-site competitions). Competitors are provided with the same algorithmic / data science problem, which is judged objectively with a live leaderboard, visible to everybody. Everybody can submit multiple times with no penalties, with the goal to come up with a code that scores the maximal possible amount of scores on that problem. During the competition the leaderboard is generated based on submissions testing against a limit number of test cases, and after the contest the final results are determined in a testing against a larger test dataset.
* '''Software Design''' – 2004 - 2014 – Officially called as Component Design from 2004 to 2009, and just ''Design'' from 2010 to 2014. Competitors were asked to take client requirements for a software component / product as input, and produce development documentation / technical specifications. Solutions were evaluated by a panel of judges according to objective scorecards.
* '''Software Development''' – 2004 - nowadays – Officially called as ''Component Development'' from 2004 to 2009, and just as ''Development'' from 2010 to nowadays. The actual rules differ from year to year, but, typically, competitors are present with technical specifications for development of a software component / application / tool, or with a more open, hackathon-style requirements, and they have about 4 hours to implement the component / product in the best possible way. Submitted solutions are evaluated by a panel of judges according to objective scorecards.
* '''UI Design''' – 2007 - nowadays – Officially called as ''Studio'' from 2007 to 2014, and ''UI Design'' from 2015 to nowadays. Competitors, provided with client requirements, are asked to create the best UI (visual) design for an software product / web portal, etc.
* '''UI Prototype''' – 2015 - nowadays. Competitors are provided with design specifications for a website / web-application, and they should create a working prototype of the frontend within a ~4 hours timeframe. The resulting submissions are judged against objective scorecards.
=== The List of Topcoder Open and Regional Events ===
{| class="wikitable mw-collapsible"
! colspan="4" |The list of Topcoder Open and Regional events<ref>{{Cite web|url=https://www.topcoder.com/community/topcoder-opens/|title=The list of main Topcoder Open events|last=|first=|date=|website=Topcoder|archive-url=|archive-date=|dead-url=|access-date=April 19, 2018}}</ref><ref group="note">Golden background highlights main Topcoder Open events of each year, where that year's champions were determined for related competition tracks.</ref>
|-
!Date
!Event
!Venue
!Competition Tracks<ref group="note">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); '''F2F''' = First to Finish (also called Mod Dash); '''IA''' = Information Architecture (Wireframes); '''MM''' = Marathon Match; '''Pr''' = UI Prototype; '''SDg''' = Software Design (also called Component Design, and just Design); '''SRM''' = Algorithm.</ref>
|-
|Jun 5 - 7, 2001
|TCCC01 (San Francisco, CA, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tccc01&d3=summary|title=2001 TopCoder Collegiate Challenge Recap|last=|first=|date=|website=Topcoder|archive-url=|archive-date=|dead-url=|access-date=April 19, 2018}}</ref><ref group="note">Officially titled ''2001 TopCoder Collegiate Challenge''</ref>
|[[Hilton San Francisco Union Square|Hilton San Francisco and Towers]]
|SRM
|- bgcolor="gold"
|Nov 2 - 3, 2001
|TCI01 (Mashantucket, CT, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tci01&d3=summary|title=2001 TopCoder Invitational Recap|last=|first=|date=|website=Topcoder|archive-url=|archive-date=|dead-url=|access-date=April 19, 2018}}</ref><ref group="note">Officially titled ''2001 TopCoder Invitational''</ref>
|[[Foxwoods Resort Casino]]
|SRM
|-
|Apr 19 - 20, 2002
|TCCC02 (Cambridge, MA, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tccc02&d3=champ|title=The Sun / TopCoder Collegiate Challenge|last=Loss|first=Adam|date=April 20, 2002|website=Topcoder|archive-url=|archive-date=|dead-url=|access-date=April 19, 2018}}</ref><ref group="note" name=":2">Officially titled ''Sun Microsystems TopCoder Collegiate Challenge''</ref>
|[[University Park at MIT|University Park]] Hotel @ MIT
|SRM
|- bgcolor="gold"
|Nov 22 - 23, 2002
|TCI02 (Uncasville, CT, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tci02&d3=champ|title=The Land Down Under comes out On Top!|last=Biondi|first=Mary Beth|date=Nov 23, 2002|website=Topcoder|archive-url=|archive-date=|dead-url=|access-date=April 19, 2018}}</ref><ref group="note">Officially titled ''2002 TopCoder Invitational''</ref>
|[[Mohegan Sun|Mohegan Sun Casino]]
|SRM
|-
|Apr 4 - 5, 2003
|TCCC03 (Cambridge, MA, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tccc03&d3=champ|title=Topcoder Collegiate Challenge 03 - Recap|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref name=":2" group="note" />
|[[University Park at MIT|University Park]] Hotel @ MIT
|SRM
|- bgcolor="gold"
|Dec 4 - 5, 2003
|TCO03 (Uncasville, CT, USA)<ref>{{Cite web|url=https://community.topcoder.com/tc?module=Static&d1=tournaments&d2=tco03&d3=tco03_overview|title=Topcoder Open 2003|last=|first=|date=|website=Topcoder|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2003 TopCoder Open Sponsored by Intel''</ref>
|[[Mohegan Sun|Mohegan Sun Casino]]
|SRM
|-
|Apr 15 - 16, 2004
|TCCC04 (Boston, MA, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tccc04&d3=tccc04_about|title=2004 Topcoder Collegiate Challenge Sponsored by Yahoo!|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2004 Topcoder Collegiate Challenge Sponsored by Yahoo!''</ref>
|[[Boston Park Plaza Hotel & Towers|Boston Park Plaza Hotel]]
|Dev, SDg, SRM
|- bgcolor="gold"
|Nov 11 - 12, 2004
|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|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2004 TopCoder Open Sponsored by Microsoft''</ref>
|Santa Clara Marriot
|Dev, SDg, SRM
|-
|Mar 10 - 11, 2005
|TCCC05 (Santa Clara, CA, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tccc05&d3=about|title=2005 TopCoder Collegiate Challenge Sponsored by Yahoo!|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2005 TopCoder Collegiate Challenge Sponsored by Yahoo!''</ref>
|Santa Clara Marriot
|Dev, SDg, SRM
|- bgcolor="gold"
|Oct 12 - 14, 2005
|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|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2005 TopCoder Open Sponsored by Sun Microsystems''</ref>
|Santa Clara Marriot
|Dev, SDg, SRM
|- bgcolor="gold"
|May 3 - 5, 2006
|TCO06 (Las Vegas, NV, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco06&d3=about|title=2006 TopCoder Open Sponsored by AMD|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|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, SDg, SRM
|-
|Nov 14 - 18, 2006
|TCCC06 (San Diego, CA, USA)<ref>{{Cite web|url=https://community.topcoder.com/tc?module=Static&d1=tournaments&d2=tccc06&d3=about|title=2006 TopCoder Collegiate Challenge Sponsored by AOL|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2006 TopCoder Collegiate Challenge Sponsored by AOL''</ref>
|San Diego Marriot Mission Valley
|Dev, SDg, SRM
|-
|May 18 - 20, 2007
|TCHS07 (West Lafayette, IN, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tchs07&d3=overview|title=2007 TopCoder High School|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2007 TopCoder High School''</ref>
|[[Purdue University]]
|SRM<ref group="note">Individual and team competition</ref>
|- bgcolor="gold"
|Jun 26 - 29, 2007
|TCO07 (Las Vegas, NV, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco07&d3=about|title=2007 TopCoder Open Sponsored by AOL|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref><ref group="note">Officially titled ''2007 TopCoder Open Sponsored by AOL''</ref>
|[[The Mirage]]
|Dev, Dg, MM, SDg, SRM
|-
|Oct 30 - Nov 2, 2007
|TCCC07 (Orlando, FL, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tccc07&d3=about|title=2007 TopCoder Collegiate Challenge|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|[[Disney's Contemporary Resort|Disney World Contemporary Resort]]
|Dev, Dg, MM, SDg, SRM
|-
|Mar 14 - 16, 2008
|TCHS08 (West Lafayette, IN, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tchs08&d3=overview|title=2008 TopCoder High School Tournament|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|[[Purdue University]]
|SRM
|- bgcolor="gold"
|May 11 - 15, 2008
|TCO08 (Las Vegas, NV, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco08&d3=about|title=2008 TopCoder Open|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|[[The Mirage]]
|Dev, Dg, MM, SDg, SRM
|-
|Jan 3 - 24, 2009
|TCHS09 (o''nline-only'')<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tchs09&d2=index|title=TopCoder High School 2009|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|''online-only''
|SRM
|- bgcolor="gold"
|Jun 1 - 4, 2009
|TCO09 (Las Vegas, NV, USA)<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=tournaments&d2=tco09&d3=overview&d4=overview|title=2009 TopCoder Open|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|[[The Mirage]]
|Dg, F2F, MM, SRM<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>
|-
|Feb 27 - Mar 20, 2010
|TCHS10 (''online-only)''<ref>{{Cite web|url=https://www.topcoder.com/tc?module=Static&d1=hs&d2=home|title=2010 TopCoder High School|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|''online-only''
|SRM
|- bgcolor="gold"
|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|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|[[The Mirage]]
|Dev, Dg, F2F, MM, SDg, SRM
|- bgcolor="gold"
|Sep 25 - 28, 2011
|TCO11 (Hollywood, FL, USA)<ref>{{Cite web|url=http://tccommunity.wpengine.com/tco11/|title=2011 TopCoder Open|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|[[Diplomat Resort & Spa Hollywood|Westin Diplomat Resort & Spa]]
|Dev, Dg, F2F, MM, SDg, SRM
|- bgcolor="gold"
|Sep 30 - Oct 4, 2012
|TCO12 (Orlando, FL, USA)<ref>{{Cite web|url=http://tccommunity.wpengine.com/tco12/|title=2012 TopCoder Open|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 22, 2018}}</ref>
|Caribe Royale Hotel
|Dev, Dg, F2F, MM, SDg, SRM
|- bgcolor="gold"
|Nov 10 - 14, 2013
|TCO13 (Washington DC, USA)<ref>{{Cite web|url=http://tccommunity.wpengine.com/tco13|title=Topcoder Open 2013|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 18, 2018}}</ref><ref name=":21" />
|Capital Hilton Hotel
|Dev, Dg, F2F, MM, SDg, SRM
|- bgcolor="gold"
|Nov 16 - 19, 2014
|TCO14 - San Francisco (CA, USA)<ref name=":20" /><ref>{{Cite web|url=https://tccommunity.wpengine.com/tco14/overview/|title=Topcoder Open 2014|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 16, 2018}}</ref>
|Pier 48
|Dev, Dg, F2F, MM, SDg, SRM
|-
|May 31, 2015
|TCO15 - St. Petersburg (Russia)<ref>{{Cite web|url=http://tco15.topcoder.com/regional-events/|title=Topcoder Open 2015 - St. Petersburg (Russia) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 16, 2018}}</ref><ref>{{Cite news|url=http://tco15.topcoder.com/2015/06/05/tco15-regional-event-st-petersburg-russia/|title=TCO15 Regional Event - St. Petersburg, Russia|last=|first=|date=|work=|access-date=April 16, 2018|archive-url=|archive-date=|dead-url=}}</ref>
|[[ITMO University]]
|Dev, SRM
|-
|Jun 20, 2015
|TCO15 - San Francisco (CA, USA)<ref name=":19" />
|[[MemSQL]] HQ
|Dev, SRM
|-
|Jul 18, 2015
|TCO15 - Tokyo (Japan)<ref>{{Cite web|url=http://tco15.topcoder.com/regional-events/#/tco15-tokyo-japan-event/|title=Topcoder Open 2015 - Tokyo (Japan) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 16, 2018}}</ref>
|[[Dwango (company)|Dwango]] offices
|Dev, SRM
|-
|Aug 22, 2015
|TCO15 - Jaipur (India)<ref name=":18" /><ref>{{Cite web|url=http://tco15.topcoder.com/regional-events/#/tco15-jaipur-india/|title=Topcoder Open 2015 - Jaipur (India) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 16, 2018}}</ref>
|[[Manipal University Jaipur|Manipal University]]
|Dev, SRM
|- bgcolor="gold"
|Sep 21 - 22, 2015
|TCO15 - Yogyakarta (Indonesia)<ref name=":19">{{Cite web|url=http://tco15.topcoder.com/|title=Topcoder Open 2015|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 16, 2018}}</ref><ref name=":1" group="note">In 2015, on-site finals for UI Design and UI Prototype competitions where held at TCO15 Yogyakarta event; and other on-site finals: Competitive Progamming (SMR), Information Architecture, Marathon Match, Software Development were held at TCO15 Indianapolis event.</ref>
|Eastparc Hotel
|Dg, Pr
|- bgcolor="gold"
|Nov 8 - 10, 2015
|TCO15 (Indianapolis, IN, USA)<ref name=":19" /><ref name=":1" group="note" />
|Omni Severin Hotel
|Dev, IA, MM, SRM
|-
|Jun 5, 2016
|TCO16 - Beijing (China)<ref>{{Cite web|url=http://tco16.topcoder.com/regional-events/beijing-china/|title=Topcoder Open 2016 - Beijing|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[ThoughtWorks]] HQ
|SRM
|-
|Jun 17, 2016
|TCO16 - New York City (USA)<ref>{{Cite web|url=http://tco16.topcoder.com/regional-events/nyc-usa/|title=Topcoder Open 2016 - NYC|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[111 Eighth Avenue#Google|Google offices]]
|SRM
|-
|Jul 30, 2016
|TCO16 - Jaipur (India)<ref>{{Cite web|url=http://tco16.topcoder.com/regional-events/jaipur-india/|title=Topcoder Open 2016 - Jaipur|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|Hotel Clarks Amer
|Dg, SRM
|-
|Aug 6 - 7, 2016
|TCO16 - Yogyakarta (Indonesia)<ref>{{Cite web|url=http://tco16.topcoder.com/regional-events/indonesia/|title=Topcoder Open 2016 - Yogyakarta|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|Hotel Royal Ambarrukmo
|Dg
|-
|Sep 3, 2016
|TCO16 - St. Petersburg (Russia)<ref>{{Cite web|url=http://tco16.topcoder.com/regional-events/tco16-russia/|title=Topcoder Open 2016 - St. Petersburg|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[ITMO University]]
|SRM
|- bgcolor="gold"
|Nov 18 - 21, 2016
|TCO16 (Washington DC, USA)<ref>{{Cite web|url=http://tco16.topcoder.com/|title=Topcoder Open 2016|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[Booz Allen Hamilton]] Innovation Center
|Dev, Dg, F2F, MM, Pr, SRM
|-
|Apr 29, 2017
|TCO17 - Austin (TX, USA)<ref>{{Cite web|url=https://tco17.topcoder.com/regional-events/austin-texas/|title=Topcoder Open 2017 - Austin (TX, USA) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[Capital Factory]]
|SRM
|-
|May 7, 2017
|TCO17 - St. Petersburg (Russia)<ref>{{Cite web|url=https://tco17.topcoder.com/regional-events/st-petersburg-russia/|title=Topcoder Open 2017 - St. Petersburg (Russia) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[ITMO University]]
|SRM
|-
|Jun 24, 2017
|TCO17 - Beijing (China)<ref>{{Cite web|url=https://tco17.topcoder.com/regional-events/beijing-china/|title=Topcoder Open 2017 - Beijing (China) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[Meituan-Dianping]] HQ
|SRM
|-
|Aug 12 - 13, 2017
|TCO17 - Yogyakarta (Indonesia)<ref>{{Cite web|url=https://tco17.topcoder.com/regional-events/yogyakarta-indonesia/|title=Topcoder Open 2017 - Yogyakarta (Indonesia) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|Hotel Royal Ambarrukmo
|Dg
|-
|Aug 20, 2017
|TCO17 - Bangalore (India)<ref>{{Cite web|url=https://tco17.topcoder.com/regional-events/bangalore-india/|title=Topcoder Open 2017 - Bangalore (India) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|Cowrks
|SRM
|-
|Sep 2, 2017
|TCO17 - Warsaw (Poland)<ref>{{Cite web|url=https://tco17.topcoder.com/regional-events/warsaw-poland/|title=Topcoder Open 2017 - Warsaw (Poland) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[University of Warsaw]], Faculty of Mathematics, Informatics and Mechanics
|SRM
|-
|Sep 8, 2017
|TCO17 - Pittsburgh (PA, USA)<ref>{{Cite web|url=https://tco17.topcoder.com/regional-events/pittsburgh-pennsylvania/|title=Topcoder Open 2017 - Pittsburgh (PA, USA) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[Google]] offices
|SRM
|- bgcolor="gold"
|Oct 21 - 24, 2017
|TCO17 (Buffalo, NY, USA)<ref>{{Cite web|url=https://tco17.topcoder.com/|title=Topcoder Open 2017|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref><ref>{{Cite news|url=https://bnmc.org/topcoder-open-2017/|title=Impact of 2017 Topcoder Open on Our Community|last=|first=|date=December 7, 2017|work=Buffalo Niagara Medical Campus Blog|access-date=April 14, 2018|archive-url=|archive-date=|dead-url=}}</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|archive-url=|archive-date=|dead-url=}}</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|archive-url=|archive-date=|dead-url=}}</ref>
|[[Buffalo Niagara Medical Campus]]
|Dev, Dg, F2F, MM, Pr, SRM
|-
! colspan="4" |Upcoming
|-
|May 12, 2018
|TCO18 - Warsaw (Poland)<ref>{{Cite web|url=https://tco18.topcoder.com/regional-events/warsaw-poland/|title=Topcoder Open 2018 - Warsaw (Poland) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|[[University of Warsaw]], Faculty of Mathematics, Informatics and Mechanics
|MM, SRM
|-
|May 26, 2018
|TCO18 - Beijing (China)<ref>{{Cite web|url=http://tco18.topcoder.com/regional-events/beijing-china/|title=Topcoder Open 2018 - Beijing (China) regional event|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=April 16, 2018}}</ref>
|[[JD.com|Jingdong]] HQ
|SRM
|-
|TBA
|TCO18 - India (TBA)
|TBA
|TBA
|-
|TBA
|TCO18 - Indonesia (TBA)
|TBA
|TBA
|-
|TBA
|TCO18 - South America (TBA)
|TBA
|TBA
|- bgcolor="gold"
|TBA
|TCO18 (USA, TBA)<ref>{{Cite web|url=https://tco18.topcoder.com/|title=Topcoder Open 2018|last=|first=|date=|website=|archive-url=|archive-date=|dead-url=|access-date=}}</ref>
|TBA
|Dev, Dg, F2F, MM, Pr, SRM
|}
== Notes ==
{{reflist|group=note}}
== References ==
{{reflist}}
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