Codeforces Round #606 (Div. 1, Div. 2, based on Technocup 2020 Elimination Round 4) starts in ~4 hours.

Please, join by this link https://codeforces.com/contests/1276,1277

Technocup is a major olympiad for Russian-speaking high-school students. So if you fit into this category, please register at https://technocup.mail.ru/ and take part in the official Elimination Round.

Codeforces Round #607 (Div. 1, Div. 2) starts in ~4 hours. Please, join by this link https://codeforces.com/contests/1280,1281

Codeforces Round 608 (Div. 2) starts in ~3 hours. Please, join by the link https://codeforces.com/contests/1271?locale=en

🔥Codeforces Global Round 6🔥 starts in ~ 4 hours.

It is the final round of the series of Codeforces Global Rounds supported by XTX Markets.

The round is open and rated for everybody!

The prizes for this round:

👕30 best participants get a t-shirt.

👕20 t-shirts are randomly distributed among those with ranks between 31 and 500, inclusive.

We will be glad to see you among the participants!

Please, join by the link https://codeforces.com/contests/1266

Educational Codeforces Round 78 (rated for Div.2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1278

Codeforces Round #609 (Div. 1, Div. 2, based on the ByteDance - Moscow Workshops Online Contest) starts in ~4 hours. Please, join by this link https://codeforces.com/contests/1268,1269

Codeforces Round 610 (Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1282

Educational Codeforces Round 79 (rated for Div.2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1279

Codeforces Round 611 (Div. 3) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1283

The final contest of the year is coming!

🎄"Good Bye 2019"🎄 will begin in ~4 hours! It is rated and open to the both divisions.

Please, join by the link https://codeforces.com/contests/1270

About 4 hours left until the first contest of 2020!

🎉"Hello 2020"🎉 is rated and open to the both divisions.

Please, join by the link https://codeforces.com/contests/1284

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