Hello Codeforces community!

On December 23, we organized the first International Lotfi Zadeh Olympiad in honor of well-known scientist Lotfi A. Zadeh. You can look at the olympiad website if you wish to know more about it.

We are also organizing the online mirror of the olympiad. Everyone is welcome to participate!

1. You will have 5 hours to solve 4 IOI like tasks.
2. Task statements will be available in English and Azerbaijani
3. Allowed programming language: C++
4. Submission limit per task: 50
5. Mirror contest will start at 24 December 2021, 22:00 (UTC +04) and will be available for 72 hours. You can take part in any 5 hours window of your choice.
6. Contest is available at http://217.160.75.124. You first need to register and then use the same username/password to log into the system.
7. The ranking of the online mirror will be available at http://217.160.75.124:8890/Ranking.html

Authors of the tasks are Nots0fast, TooNewbie, and Mamedov