10 principais timus.ru concorrentes

codeforces.com

codeforces. programming competitions and contests, programming community

leetcode.com

Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.

hackerrank.com

hackerrank is the market-leading technical assessment and remote interview solution for hiring developers. learn how to hire technical talent from anywhere!

projecteuler.net

a website dedicated to the fascinating world of mathematics and programming

codewars.com

Achieve mastery through challenge. Practice coding on over 12,000 different coding problems.

uva.onlinejudge.org

online judge

spoj.com

SPOJ (Sphere Online Judge) is an online judge system with over 315,000 registered users and over 20000 problems. The solution to problems can be submitted in over 60 languages including C, C++, Java, Python, C#, Go, Haskell, Ocaml, and F#. SPOJ has a rapidly growing problem set/tasks available for practice 24 hours/day, including many original tasks prepared by the community of expert problem setters associated with the project.

atcoder.jp

AtCoder is a programming contest site for anyone from beginners to experts. We hold weekly programming contests online.

topcoder.com

Thrive is our vault of content that we have been gathering over the years. It is full of tutorials and workshops that matter. Grow with us!

informatics.mccme.ru

школьникам зарегистрировавшись, вы можете решать учебные и олимпиадные задачи по информатике и сдавать их на проверку в автоматическую тестирующую систему. учителям мы работаем над удобными инструментами, которые позволят вам работать с учениками на уроках, кружках и тренировках к олимпиадам наиболее эффeктивным способом. отдельная регистрации для учителей, они получают доступ в удобной форме ко всем материалам сайта: тестам, подробным результатам сдачи задач и т.п. а также сможете добавлять свои задачи как для решения своими учениками, так и для всех посетителей сайта.