All the problems were authored and prepared by me. I would like to give special thanks to everyone who made this round possible:
- KAN for excellent coordination with a lot of valuable advice!
- KAN again for translation of statements!
- tdpencil, Stepavly, Supermagzzz, minhcool, dbsic211, generic_placeholder_name, QuangBuiCP, PurpleCrayon, xuanquang1999, ta4p, hieplpvip, tourist, KazamaHoang for testing and valuable feedback!
- MikeMirzayanov for great Codeforces and Polygon platforms!
- You, for participating!
The round consists of 5 problems and you have 2 hours to solve them.
Wish you good luck and high ratings!