Hello Codeforces! The 10th Stage of the 1st Universal Cup is coming. It will be held from Apr 1th to 2th.

The contest is based on a "simple" contest, Yuhao Du Contest 11. It was used in the Osijek Competitive Programming Camp 2023 Winter. Teams that participated in the camp can have their camp results included in the final standings. Thanks to the judges and authors for preparing this great contest and sharing with us as a Universal Cup Stage.

This contest consists of some problems I wrote in recent two years and some new problems. Most problems are not published before, but some problems are public, or well-known in China. If you solved problems I wrote in private training contests or some contests including ZJOI 2020 and SDOI 2022, please skip this round.

As usual, we have three time windows for participating. You can participate in the contest in the following three time windows:

• Apr 1st 13:00 — 18:00 (UTC +8)
• Apr 1st 19:00 — 24:00 (UTC +8)
• Apr 2nd 02:00 — 07:00 (UTC +8)

Please note that you can see two scoreboards in DOMjudge. The 'Local Scoreboard' shows the standings ONLY IN THE CURRENT TIME WINDOW. And the 'Combined Scoreboard' shows all participants, including the onsite participants, and the cup participants in the previous time windows.

Contest link: https://domjudge.qoj.ac/

Universal Cup Scoreboard: https://qoj.ac/ucup/scoreboard

About Universal Cup:

Universal Cup is a non-profit organization dedicated to providing trainings for competitive programming teams. Up to now, there are more than 500 teams from all over the world registering for Universal Cup.

A more detailed introduction: https://codeforces.com/blog/entry/111672

Register a new team: https://ucup.ac/register (the registration request will be processed before each stage)

Results of the past stages: https://ucup.ac/results

Terms: https://ucup.ac/terms

Ratings: https://ucup.ac/rating