Codeforces Round #719 (Div. 3) will take place on the 4th of May at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/1520

Codeforces and Polygon are temporarily unavailable because of provider network issues.

Now everything is working. If the issue returns, then we will consider the possibility of postponing the round.

Codeforces Round #719 (Div. 3) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/1520

Unfortunately, due to Internet provider network issues, we have to postpone the round. The current plan, that the round is postponed by 24 hours, will start on Wednesday, May 5, 2021 at 17:35 (UTC). https://www.timeanddate.com/worldclock/fixedtime.html?day=5&month=5&year=2021&hour=17&min=35&sec=0&p1=166

Codeforces Round #719 (Div. 3) starts in ~45 minutes. Please, join by the link https://codeforces.com/contests/1520

Codeforces Round #720 (Div. 2) will take place on the 7th of May at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/1521

Codeforces Round #720 (Div. 2) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/1521

Educational Codeforces Round 109
(rated for Div. 2) starts on the 16th of May at 08:00 UTC.
Please, join by the link https://codeforces.com/contests/1525

Educational Codeforces Round 109
(rated for Div. 2) starts in ~2 hours.
Please, join by the link https://codeforces.com/contests/1525

🔥Codeforces Raif ML Round 1🔥 will take place on the 17th of May at 16:00 UTC.

Participants are invited to build a predictive model based on the provided historical data.

It will be an unrated round for individual participation.

🎁At stake: 🎁
1-4 places — 100K rubles each
5-10 places — 50K rubles each
1-60 places — merch packages

Cash prizes will be contested only among Russian residents (we expect winning participants to provide descriptions of their solutions in Russian).

We will be glad to see you among the participants!

Please, join by the link https://codeforces.com/contests/1522

🔥Codeforces Raif ML Round 1🔥 (unrated, individual, prizes) starts in ~2 hour.

Please, join by the link https://codeforces.com/contests/1522

Codeforces Round #721 (Div. 2) will take place on the 20th of May at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/1527

Codeforces Round #721 (Div. 2) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/1527

Codeforces Round #722 (Div. 1, Div. 2) will take place on the 24th of May at 14:35 UTC.
Please, join by the link https://codeforces.com/contests/1528,1529?locale=en

Codeforces Round #722 (Div. 1, Div. 2) starts in ~2 hours. Please, join by this link https://codeforces.com/contests/1528,1529?locale=en

🔥ICPC Challenge 2021: Marathon (powered by Huawei)🔥 starts on 26th of May at 04:00 UTC.

The contest is unrated.

The Challenge problem is based on a real-world industrial topic, providing participants the opportunity to learn about cutting-edge technologies, and is open to the global community.

The top-scoring participants will receive great prizes, including Huawei MateBook X, Huawei P40 Pro, Huawei Matepad Pro, and Huawei Watch GT 2 Pro.

We will be glad to see you among the participants!

Please, join by the link https://codeforces.com/contests/1524

🔥ICPC Challenge 2021: Marathon (powered by Huawei)🔥 (unrated, prizes) starts in ~2 hours.
Please, join by the link https://codeforces.com/contests/1524

Codeforces Round #723 (Div. 2) will take place on the 28th of May at 14:05 UTC.
Please, join by the link https://codeforces.com/contests/1526

Codeforces Round #723 (Div. 2) starts in ~2 hours. Please, join by the link https://codeforces.com/contests/1526