|
| author = Mikhail Mirzayanov
| url = {{url|https://codeforces.com/}}
| users = 6001,000692,402
| launch_date = {{start date|2009|4|10}}
| current_status = Active
}}
'''Codeforces''' ({{langx|ru|Коудфорсес}}) is a website that hosts [[competitive programming]] contests.<ref>{{Cite web|url=https://mic.com/articles/186412/north-korean-college-coders-beat-stanford-university-in-a-2016-competition-heres-why-that-matters#.9baJjoyF5|archive-url=https://web.archive.org/web/20201109024608/https://www.mic.com/articles/186412/north-korean-college-coders-beat-stanford-university-in-a-2016-competition-heres-why-that-matters#.9baJjoyF5|url-status=dead|archive-date=November 9, 2020|title=North korean college coders beat Stanford University in a 2016|website=mic.com|quote=Codeforces — a Russian competitive coding site with contestants from around the world}}</ref> It is maintained by a group of competitive programmers from [[ITMO University]] led by Mikhail Mirzayanov.<ref name="news_itmo">{{Cite web|url=http://news.ifmo.ru/en/education/official/news/7861/|title=Codeforces Founder Will Teach Web Development at ITMO|website=news.ifmo.ru|date=20 September 2018 }}</ref> Since 2013, Codeforces claims to surpass [[TopcoderTopCoder]] in terms of active contestants.<ref>{{Cite web|url=http://codeforces.com/blog/entry/10148|title=Codeforces results 2013|website=codeforces.com}}</ref> As of 2019, it has over 600,000 registered users.<ref>{{Cite web|url=https://codeforces.com/blog/entry/56831|title=Codeforces results 2017|website=codeforces.com}}</ref> On its 15th anniversary, Codeforces had a total of 1,692,402 users with at least one submission.<ref>{{Cite web|url=https://codeforces.com/blog/entry/138982|title=Codeforces celebrates its 15th anniversary!|website=codeforces.com|date=30 January 2025 }}</ref> Codeforces along with other similar websites are used by some sport programmers, like [[Gennady Korotkevich]], [[Petr Mitrichev]], Benjamin Qi and [[Makoto Soejima]], and by other programmers interested in furthering their careers.<ref>{{Cite news|url=https://www.bloomberg.com/news/features/2015-09-25/the-jocks-of-computer-code-do-it-for-the-job-offers|title=The jocks of computer code do it for the job offers|newspaper=Bloomberg|date=25 September 2015 }}</ref><ref>{{Cite web|url=https://luckytoilet.wordpress.com/tag/codeforces/|title=Are programming competitions a good use of time?|website=wordpress.com|date=23 December 2016 }}</ref><ref>{{Cite web|url=http://www.lus.ac.bd/news/student-of-cse-dept-becomes-candidate-master-in-codeforces/|title=Student of CSE Dept. becomes Candidate Master in Codeforces|website=www.lus.ac.bd|date=26 April 2018 }}</ref>
== Overview ==
The Codeforces platform is typicallya usedplatform whenwhere preparingpeople forgenerally practice competitive programming contests<ref>{{cite AV media |title=Difference between HackerRank, LeetCode, Topcoder and Codeforces |medium=Youtube |language=English |url=https://www.youtube.com/watch?v=J267bz_G7xE&t=1m45s |time=1:45 |quote=Difference between HackerRank, LeetCode, Topcoder and Codeforces: "Topcoder and Codeforces is a website that's typically used when preparing for actual competitive programming contests" }}</ref><ref>{{Cite web|url=http://aipo.computing.dcu.ie/training|title=All-Ireland Programming Olympiad Training|website=aipo.computing.dcu.ie|access-date=2018-10-26|archive-date=2019-12-18|archive-url=https://web.archive.org/web/20191218032907/http://aipo.computing.dcu.ie/training|url-status=dead}}</ref><ref>{{Cite web|url=https://turing.cz/tom/acm.html|title=ACM-ICPC training at FIT CTU|website=turing.cz|language=Czech}}</ref><ref>{{Cite web|url=https://medium.freecodecamp.org/coding-interviews-for-dummies-5e048933b82b|title=The 30-minute guide to rocking your next coding interview|website=medium.freecodecamp.org|date=16 February 2022 |quote=CodeForces questions are more similar to questions in competitive programming}}</ref> and it offers the following features:
* Short (2-hours) contests, called "Codeforces Rounds", held about once a week<ref>{{Cite book |last=Laaksonen |first=Antti |url=https://cses.fi/book/book.pdf |title=Competitive Programmer's Handbook |year=2018 |page=16 |quote="At the moment, the most active contest site is Codeforces, which organizes contests about weekly."}}</ref><ref>{{Cite web|url=http://tildeweb.au.dk/au121/code/|title=Algorithms programming competitions|website=tildeweb.au.dk}}</ref>
|-
|≥ 4000
| '''{{font color|red|Te}}{{font color|black|ouristponym}}'''
|1
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* [[Topcoder]]
* [[UVa Online Judge]]
* [[LeetCode]]
* [[Competitive programming]]
* [[:ja:AtCoder]]
== References ==
| 