2023-2024 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) starts in ~2 hours. Please, join by this link https://codeforces.com/contests/1912

Codeforces Round #915 (Div. 2) will take place on the 16th of December at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/1905?locale=en

Due to technical issues, Polygon is temporarily out of service. Codeforces may experience intermittent disruptions. Expected repair time: 4:00 UTC. We apologize for the inconvenience.

Codeforces Round #915 (Div. 2) starts in ~2 hours.  Please, join by this link https://codeforces.com/contests/1905?locale=en

Educational Codeforces Round 160
(rated for Div. 2) starts on the 18th of December at 14:35 UTC.  
Please, join by the link https://codeforces.com/contests/1913

Educational Codeforces Round 160
(rated for Div. 2) starts in ~2 hours. 
Please, join by the link https://codeforces.com/contests/1913

Codeforces Round #916 (Div. 3) will take place on the 19th of December at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/1914

Codeforces Round #916 (Div. 3) starts in ~2 hours.  Please, join by this link https://codeforces.com/contests/1914

🟢Pinely Round 3 (Div. 1 + Div. 2)🟢 starts on 23rd of December at 14:35 UTC.

It will be combined rated round for both divisions.

This round will be held with a support of Pinely. Pinely is a privately owned & funded algorithmic trading firm, mainly focusing on high frequency and ultra low latency trading.

🎁Top 30 contestants and 10 random contestants placed 31-100 will receive a branded Pinely hoodie.

We will be glad to see you among the participants!

Please, join by the link https://codeforces.com/contests/1909

🟢Pinely Round 3 (Div. 1 + Div. 2)🟢(Rated, Prizes) starts in ~4 hours.
Please, join by the link
https://codeforces.com/contests/1909

Last call! 🟢Pinely Round 3 (Div. 1 + Div. 2)🟢 starts in ~1 hour. Please, join by this link https://codeforces.com/contests/1909

Codeforces Round #917 (Div. 2) will take place on the 24th of December at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/1917?locale=en

Codeforces Round #917 (Div. 2) starts in ~2 hours.  Please, join by this link https://codeforces.com/contests/1917?locale=en

Codeforces Round #918 (Div. 4) will take place on the 28th of December at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/1915?locale=en

Gentle reminder: you still have the opportunity to participate in the competition organized by our title sponsor, the TON Foundation, in their ecosystem.

💎TON Smart Challenge #5💎 lasts until December 30 at 23:59:59 (UTC+4).

The contest for smart contract developers has a total prize fund of $20,000 in Toncoin.

Register through the @smartchallengebot.

Codeforces Round #918 (Div. 4) starts in ~2 hours.  Please, join by this link https://codeforces.com/contests/1915?locale=en