Stuff
My stuff
Math
Computer science
Miscellaneous
Links
Informatics
- Polish Olympiad in Informatics (PL)
- Algorithmic Engagements (PL)
- Themis online judge
- Codeforces
- Sphere Online Judge
- Teenager's Academy of Informatics (Młodzieżowa Akademia Informatyki)
- C++ in Google style
Education
Organizations
Miscellaneous
- Mafia online
- Ktulu game (PL)
- Cards against humanity (for adults only)
- agar.io
- Epic Rap Battles of History