Hello, Codeforces!

We are pleased to announce the resumption of the Global Rounds. Thanks to XTX Markets for supporting the initiative! In 2025, we will hold 3 such rounds. The series results will take into account the best 2 participations out of 3.

On Sep/20/2025 17:35 (Moscow time) we will host Codeforces Global Round 29 (Div. 1 + Div. 2).

Codeforces Global Round 29 marks the first round in the 2025 series of Codeforces Global Rounds. These rounds are open and rated for everyone.

The prizes for this round are as follows:

• The top 30 participants will receive a t-shirt.
• 20 t-shirts will be randomly distributed among participants ranked between 31 and 500, inclusive.

The prizes for the 3-round series in 2025:

• In each round, the top-100 participants get points according to the table.
• A participant's final score will be the sum of the points they earned in their 2 highest-placing rounds.
• The top 20 participants across the series will receive sweatshirts and placement certificates.

We extend our gratitude to XTX Markets for supporting the global rounds initiative in 2025!

The problems were written and prepared by misteg168, FelixMP, Pablo-No, danx, MeGustaElArroz23, Clan328 and me.

We would also like to thank:

• Coordination: Um_nik

• 🍫 Nutella testing: gamegame, Ormlis

• 🍅 Tomato testing: ikaurov, prvocislo, NemanjaSo2005, Merkurev, tfg, TheScrasse and WLZ

• 🍌 Banana testing: rlidon2006, Esomer, Sergio_2357 and KiKoS

• 🫐 Blueberry testing: JanBobi and rafatoa

• 🍆 Eggplant testing: AngrySeal, Lucia_Aparicio, chromate00 and eloipages

• 🥒 Cucumber testing: Kalufas

• 🥥 Coconut testing: dlos

• MikeMirzayanov and KAN for the great platforms

Round Information:

• Duration: 3h
• Number of problems: 9

Score distribution will be published soon.
Picture of authors (and some testers) (and some non testers)

We eagerly anticipate your participation!