Codeforces Round #612 (Div. 1, Div. 2) starts in ~4 hours. Please, join by this link https://codeforces.com/contests/1286,1287

Codeforces Round 613 (Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1285

Educational Codeforces Round 80 (rated for Div.2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1288

Codeforces Round #614 (Div. 1, Div. 2) starts in ~4 hours. Please, join by this link https://codeforces.com/contests/1292,1293

Codeforces Round 615 (Div. 3) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1294

Educational Codeforces Round 81 (rated for Div.2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1295

Codeforces Round #616 (Div. 1, Div. 2) starts in ~4 hours. Please, join by this link https://codeforces.com/contests/1290,1291

Codeforces Round 617 (Div. 3) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1296

Codeforces celebrates an unusual birthday: 10 years is a symbolic and important date.

More than 700 rounds and open competitions have been hosted, the number of problems in the archive is close to 6000, more than 60 million submissions have been judged.

I appeal to the entire Codeforces audience to support the platform by participating in the anniversary crowdfunding campaign. Your donation will be a contribution to the future of Codeforces, will help its development and work. We need resources to continue to host rounds, not to stop developing, to innovate and to maintain the existing infrastructure.

— Mike Mirzayanov

https://codeforces.com/10years

Codeforces Round #618 (Div. 1, Div. 2) starts in ~4 hours. Please, join by this link https://codeforces.com/contests/1299,1300

Educational Codeforces Round 82 (rated for Div.2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1303

Codeforces Round 619 (Div. 2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1301

Codeforces Round 620 (Div. 2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1304

Codeforces Round #621 (Div. 1 + Div. 2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1307

Codeforces Round 622 (Div. 2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1313

Codeforces Round #623 (Div. 1, Div. 2, based on VK Cup 2019-2020 - Elimination Round, Engine) starts in ~4 hours. Please, join by this link https://codeforces.com/contests/1314,1315?locale=en

Last call! Codeforces Round #623 (Div. 1, Div. 2, based on VK Cup 2019-2020 - Elimination Round, Engine) starts in ~1 hour. Please, join by this link https://codeforces.com/contests/1314,1315?locale=en

Codeforces Round 624 (Div. 3) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1311

💥Kotlin Heroes: Episode 3💥 starts in ~ 4 hours.

The round is unrated.

- Top three winners will get prizes of $512, $256, and $128 respectively;

- Top 50 will win a Kotlin Heroes t-shirt and an exclusive Kotlin badge;

- Competitors solving at least one problem will enter into a draw for one of 50 Kotlin Heroes t-shirts.

We will be glad to see you among the participants!

Please, join by the link https://codeforces.com/contests/1297

Kotlin Heroes: Episode 3 (unrated, 100 t-shirts + cash prizes) starts in ~1 hour.

Please, join by the link
https://codeforces.com/contests/1297