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Codeforces Official

9 Oct, 18:05

🌟DeepInfra Round 1 (Codeforces Round 1126, Div. 1 + Div. 2)🌟 starts on 10 October 2026 at 15:05 UTC.

Note the unusual start time of the round.

It is rated and open for everyone!

Round will be held with the support of DeepInfra, an AI inference cloud that makes it simple to run the latest machine learning models at scale - LLMs, vision, embeddings, image generation, video generation, speech, and more.

🎁 Don’t miss your chance to win great prizes:
Top 3: 1000 USDT + merch
4-6: 250 USDT + merch
7-10: 150 USDT + merch
Random 10 from the top 100 (rank 11-100): merch

🏆 See you on the leaderboard!

Please, join by the link https://codeforces.com/contests/2271

DeepInfra Round 1 (Codeforces Round 1126, Div. 1 + Div. 2) - Codeforces

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Codeforces Official

7 Oct, 15:35

Codeforces Round 1125 (Div. 3) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/2275

Codeforces Round 1125 (Div. 3) - Codeforces

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Codeforces Official

6 Oct, 17:35

Codeforces Round 1125 (Div. 3) will take place on 7 October 2026 at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/2275

Codeforces Round 1125 (Div. 3) - Codeforces

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Codeforces Official

26 Sep, 15:35

Codeforces Round 1124 (Div. 1, Div. 2) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/2268,2269

Codeforces Round 1124 - Codeforces

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Codeforces Official

25 Sep, 17:35

Codeforces Round 1124 (Div. 1, Div. 2) will take place 26 September 2026 at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/2268,2269

Codeforces Round 1124 - Codeforces

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Codeforces Official

25 Sep, 15:35

Codeforces Round 1123 (Div. 2) starts in ~2 hours.
Please, join by the link https://codeforces.com/contests/2267

Codeforces Round (Div. 2) - Codeforces

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Codeforces Official

24 Sep, 17:35

Codeforces Round 1123 (Div. 2) will take place 25 September 2026 at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/2267

Event Time Announcer

Event Time Announcer shows time for an event in locations all over the world. In Moscow it happens on Friday, 25 September 2026, 17:35:00.

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Codeforces Official

21 Sep, 15:35

Codeforces Round 1122 (Div. 3) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/2266

Codeforces Round (Div. 3) - Codeforces

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17k 0 16 89

Codeforces Official

20 Sep, 17:35

Codeforces Round 1122 (Div. 3) will take place on 21 September 2026 at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/2266

Codeforces Round (Div. 3) - Codeforces

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16.7k 0 22 82

Codeforces Official

13 Sep, 18:05

Codeforces Round 1121 (Div. 2) starts in ~2 hours.
Please, join by the link https://codeforces.com/contests/2264

Codeforces Round (Div. 2) - Codeforces

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20.6k 0 8 70

Codeforces Official

12 Sep, 20:05

Codeforces Round 1121 (Div. 2) will take place 13 September 2026 at 17:05 UTC.
Please note the unusual time of the round.
Please, join by the link https://codeforces.com/contests/2264

Codeforces Round (Div. 2) - Codeforces

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Codeforces Official

12 Sep, 15:35

Codeforces Round 1120 (Div. 1, Div. 2) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/2262,2263

Codeforces Round 1120 - Codeforces

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17.2k 0 7 47

Codeforces Official

11 Sep, 17:35

Codeforces Round 1120 (Div. 1, Div. 2) will take place 12 September 2026 at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/2262,2263

Codeforces Round 1120 - Codeforces

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Codeforces Official

11 Sep, 13:01

Hi, Codeforces! 📱

We'd like to share some exciting news: Telegram is back as our title sponsor! 🎉

This means we can keep developing and maintaining the system and, most importantly, running rounds for a long time to come.

A quick throwback to Codeforces history - our relationship with Pavel Durov and Telegram goes all the way back to 2010, when Pavel first put his faith in our community and supported Codeforces development. Since then, our cooperation has continued, and Telegram has supported Codeforces in different ways over the years. We're super excited to have Telegram as the title sponsor again.

This support helps us with every round we run and gives us a chance to do new things, too.

Thanks to Telegram's new support, we've already started moving our infrastructure to a more professional data center, making the system faster and more stable. 🚀

Expect more good news! ✨

Telegram Returns as Title Sponsor of Codeforces!

Hi, Codeforces!

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Codeforces Official

8 Sep, 15:35

Educational Codeforces Round 194
(Rated for Div. 2) starts in ~2 hours.
Please, join by the link https://codeforces.com/contests/2260

Educational Codeforces Round 194 (Rated for Div. 2) - Codeforces

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Codeforces Official

7 Sep, 17:35

Educational Codeforces Round 194
(Rated for Div. 2) starts on 8 September 2026 at 14.35 UTC.

The series of Educational Rounds continues thanks to the support of Neapolis University of Paphos (NUP), with scholarships provided by JetBrains.

Planning to apply for the Computer Science and Artificial Intelligence (CSAI) program at Neapolis University Pafos?

👉 Join JetBrains Youth Clubs: AI and Math to help you prepare.

Please, join by the link https://codeforces.com/contests/2260

Educational Codeforces Round 194 (Rated for Div. 2) - Codeforces

Codeforces. Programming competitions and contests, programming community

19.2k 0 9 53

Codeforces Official

5 Sep, 15:35

Codeforces Round 1119 (Div. 3) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/2259

Codeforces Round (Div. 3) - Codeforces

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Codeforces Official

5 Sep, 11:27

Hey, having trouble sending out email announcements, so posting an extra one here.

Codeforces Round 1119 (Div. 3) starts in ~6 hours. Please, join by this link https://codeforces.com/contests/2259

Codeforces Round (Div. 3) - Codeforces

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Codeforces Official

4 Sep, 17:35

Codeforces Round 1119 (Div. 3) will take place on 5 September 2026 at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/2259

Codeforces Round (Div. 3) - Codeforces

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Codeforces Official

2 Sep, 17:27

It is fixed now!

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