I am happy to invite you to April Fools Day Contest 2023, which will take place on Saturday, April 1, 20 at 09:35UTC+1. Notice the usual time! This round is called daoli Round. DLOI made it together. The round will be rated for participants with rating lower than 500. You will have 20 hours to solve 50 problems. This is a marathon race. The problems were authored and prepared by me ,tourist and littlejuruo.
I would like to thank the following people who made the round possible:
Sparky_Master_WCH1226 for coordination, help in problem preparation and translating the statements.
Somebody for testing and providing valuable feedback.
Our mascot is here:
we also love chiense culture: