Hello, Codeforces!

We are glad to invite you to take part in Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2), which will start on Apr/25/2026 17:35 (Moscow time). You will be given 8 problems and 2.5 hours to solve them. This round will be combined for Division 1 and Division 2 and will be rated for everyone.

All problems are authored by lizhous, Lyz09, ma2021tyoi0037, hzy_____ and me.

We would like to thank the following people for making this round possible:

• Um_nik for pre-reviewing the round.
• Error_Yuan for the coordination and helping with preparation.
• Alexdat2000 for Russian translation.
• Rebex for providing some rejected problems and preparing some problems.
• _Diu_ and zltzlt for International Grandmaster Testing.
• Qwerty1232, _istil and SunsetGlow95 for Grandmaster Testing.
• Arpa for Master Testing.
• teruel, SpyrosAliv and Mahmoud-Atia for Candidate Master Testing.
• Enzinho, JuanJr for Expert Testing.
• khanter_ for Pupil Testing.
• You for participating the round.
• MikeMirzayanov and KAN for Codeforces and Polygon systems.

Score distribution will be announced later.

Now a few words from our sponsor.

Spectral::Technologies is an HFT fund – we build trading strategies and low-latency infrastructure for global markets. The people doing this: IMO, IOI, IPhO and All-Russian Olympiad medalists and top engineers – people who love the challenge and always want a bigger one. That's who Spectral was built for.

We are actively hiring! Check out our Quant roles:

• Junior Quant – 150–180k USD + profit sharing
• Middle Quant – 240–320k USD + profit sharing
• Senior Quant – 360–500k USD + profit sharing

We’re also hiring for C++, ML, and DevOps roles. Complete the application form to explore career opportunities with us.

We are excited to sponsor this Round as part of Spectral::Cup 2026 — a three-round tournament where prizes get more valuable with every round.

Prizes for Round 1:

Top 30 will get merch bags with stickers and personalized t-shirts.

Make sure that you take part in all three rounds to improve your chances to get the main prizes. We prepared bigger prizes for top performers by their final score in Spectral::Cup 2026. The final score will be calculated based on your best 2 results.

• Top-3 by final score will get (1st) MacBook Pro, (2nd) iPad Pro, (3rd) Whoop — or USDT equivalent to the prize value
• Top-15 by final score will get Claude subscription
• 30 random participants among top 500 based on the final score will get additional prizes

Code fast, think faster – see you in the next round of Spectral::Cup 2026!