Hello!
Opencup GP of Tokyo will be held tomorrow, with the same problems as tomorrow's MW-prefinal contest.
The writers are yosupo, sigma425, and me. I will post the editorial after the contest.
We are looking forward to your participation!
UPD The contest is over. Thank you for your participation!.
UPD2 I managed to load the contest onto the Gym. I'm sorry that the statement doesn't look pretty since it was originally written in markdown format. This is my first attempt to make a Gym contest, so there might be a mistake. If you find some problem, please let me know.