Hello everyone! The 4th Stage of the 1st Universal Cup: Ukraine, will be held on Feb 18th, 2023.

The contest is based on 1/8 and 1/4 Ukrainian stages of SEERC 2023, plus some extra problems. Please, don't participate, if you have seen these problems. This contest also serves as Day 1 in Osijek Competitive Programming Camp 2023 on February 18, 2023.

Author of all problems: antontrygubO_o. I hope you like the problems.

You can participate in the contest in the following three time windows:

• Feb 18th 13:00 — 18:00 (UTC +8)
• Feb 18th 19:00 — 24:00 (UTC +8)
• Feb 19th 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 200 teams from all over the world registering for Universal Cup.

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

Register a new team: https://ucup.ac/register

UPD1: Thanks for your participation! Here is Editorial.

I also uploaded contest to gym: Anton Trygub Contest 1 (The 1st Universal Cup, Stage 4: Ukraine).

I hope to add ghost participants by tomorrow.