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Codeforces is a website that hosts competitive programming contests
https://codeforces.com/


Codeforces outage report graph

This chart above shows error reports submitted in the past 24 hours (one day) compared to the recent average over similar days. The status of is marked as "down" when the number of reported errors is significantly higher than the average errors.



More about Codeforces service

Codeforces is a website that hosts competitive programming contests. It is maintained by a group of competitive programmers from ITMO University led by Mikhail Mirzayanov. Since 2013, Codeforces claims to surpass Topcoder in terms of active contestants. As of 2018, it has over 600,000 registered users. Codeforces along with other similar websites are used by top sport programmers like Gennady Korotkevich, Petr Mitrichev, Benjamin Qi and Makoto Soejima, and by other programmers interested in furthering their careers.

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