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  2. Codeforces - Wikipedia

    en.wikipedia.org/wiki/Codeforces

    Codeforces (Russian: Коудфорсес) is a website that hosts competitive programming contests. [1] It is maintained by a group of competitive programmers from ITMO University led by Mikhail Mirzayanov. [2] Since 2013, Codeforces claims to surpass Topcoder in terms of active contestants. [3] As of 2019, it has over 600,000 registered users ...

  3. Chess rating system - Wikipedia

    en.wikipedia.org/wiki/Chess_rating_system

    1959 – The USCF names Arpad Elo the head of a committee to examine all rating systems and make recommendations. 1961 – Elo develops his system and it is used by the USCF. [24] It is published in the June 1961 issue of Chess Life. [25] 1970 – FIDE starts using the Elo system. Bobby Fischer is at the top of the list. [26]

  4. Gennady Korotkevich - Wikipedia

    en.wikipedia.org/wiki/Gennady_Korotkevich

    Gennady Korotkevich (Belarusian: Генадзь Караткевіч, Hienadź Karatkievič, Russian: Геннадий Короткевич; born 25 September 1994) is a Belarusian competitive sport programmer who has won major international competitions since the age of 11, as well as numerous national competitions.

  5. Competitive programming - Wikipedia

    en.wikipedia.org/wiki/Competitive_programming

    Codeforces [19] [17] Russian platform, maintained by ITMO University, which provides frequent (up to two per week) 2-3 hour contests (available in English and Russian). Users can also participate on contests published by other users on the "gym" section, submit additional test cases to "hack" submissions from other competitors during contests ...

  6. Elo rating system - Wikipedia

    en.wikipedia.org/wiki/Elo_rating_system

    An Elo-based ranking of National Hockey League players has been developed. [61] The hockey-Elo metric evaluates a player's overall two-way play: scoring AND defense in both even strength and power-play/penalty-kill situations. Rugbyleagueratings.com uses the Elo rating system to rank international and club rugby league teams.

  7. Ranks of the Junior Reserve Officers' Training Corps - Wikipedia

    en.wikipedia.org/wiki/Ranks_of_the_Junior_Reserve...

    Members of the Junior Reserve Officer Training Corps are assigned various ranks, the titles and insignia of which are based on those used by the United States Armed Forces (and its various ROTCs), specifically the United States Army, U.S. Marine Corps, U.S. Navy, U.S. Air Force, U.S Space Force, and the U.S. Coast Guard. Rank requirements vary ...

  8. List of police ranks - Wikipedia

    en.wikipedia.org/wiki/List_of_police_ranks

    Police ranks are a system of hierarchical relationships in police organizations. [1] The rank system defines authority and responsibility in a police organization, [2

  9. List of corporate titles - Wikipedia

    en.wikipedia.org/wiki/List_of_corporate_titles

    Corporate titles or business titles are given to company and organization officials to show what job function, and seniority, a person has within an organisation. [1] The most senior roles, marked by signing authority, are often referred to as "C-level", "C-suite" or "CxO" positions because many of them start with the word "chief". [2]