Hello, Codeforces!

We are pleased to invite you to IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2).

The Preliminary Contest is a rated contest for Div. 1 + Div. 2, taking place on Jan/20/2025 17:35 (Moscow time). The problems for this round were prepared by jqdai0815 and orzdevinwang.

The top 50 contestants at least 18 years old will be invited to participate in the onsite finals. We will cover the travel expenses for onsite contestants. The finals are scheduled to take place in CUHK from February 27 to March 2, 2025.

The prizes for first place, second place, and third place of the onsite final are 10000, 5000, and 3000 USD.

More prizes and detailed information will be announced soon. You can visit International AI Elite Programming Contest for information.

We would like to thank:

• MikeMirzayanov for the Codeforces and Polygon platforms.
• Sugar_fan for coordinating the round.
• Alexdat2000 for translating the problems into Russian.
• All of our testers: Tobo, A_G, Retired_shstyle, efishel, MeIoN_is_UMP45, el_programador, _istil, StarSilk, Cyber, xish, andreumat, GoogleBot, Tekor, SkyWave2022, LamaSalah, Error_Yuan, becaido, EzikBro, _LeMur_.
• And You for participating!

The score distribution will be announced soon.

We hope you enjoy this round. Good luck and have fun!