Hello Codeforces!

This year's APIO is hosted by China. The official website is apio2023.org.

As usual, you are invited to submit tasks for APIO2023 competition.

Each problem that's actually used in the contest will be rewarded with CNY3,000 or USD400 after the end of the event.

The submission deadline is April 15, 2023.

You can go to apio2023.org/callTasks for detail information.

We are looking forward to your interesting problems!