Hello, Codeforces!

I would like to invite you all to the call for tasks for APIO 2025. This year's edition will be hosted by Uzbekistan.

APIO 2025 needs tasks of various difficulties so we encourage all to submit tasks of any difficulties. Each task that's actually used in the contest will be rewarded with USD 400 after the end of the event.

Details of the task submission process are available here: https://apio2025.uz/call-for-tasks.

The deadline for task submission is April 20, 2025.

Looking forward to your interesting problems!

Hello!

Uzbekistan IOI 2024 Team Selection Test took place last month, and we have uploaded its problems to Codeforces Gym.

About the competition:

• Two contests with 3 problems each

• Duration 5 hours

• IOI format (problems have subtasks)

• Statements in English

• Problems are NOT ordered by difficulty

• Link to the contests — Day 1 and Day 2.

All tasks were prepared by DilshodbekX, MDSPro, and drdilyor. Note that in the original competition, we used CMS and graders, so if we have made a mistake while exporting them to Polygon, please let us know.

We hope you enjoy the problems!