Codeforces Round 560 (Div. 3) starts in ~2 hours. Please, join by the link
https://codeforces.com/contests/1165

Educational Codeforces Round 65 (rated for Div.2) starts in ~3 hours. Please, join by the link https://codeforces.com/contests/1167

Codeforces Round 561 (Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1166

Codeforces Round 562 (Div. 1+ Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1168,1169

Kotlin Heroes starts in ~15 minutes.

We are happy to announce that in partnership with JetBrains to promote Kotlin programming language we are launching a series of "Kotlin Heroes" programming contests.

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.

Please, join by the link https://codeforces.com/contests/1170

Codeforces Global Round 3 starts in ~ 4 hours.

It is the third round of a new 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/1148

Codeforces Round 563 (Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1174

Educational Codeforces Round 66 (rated for Div.2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1175

Codeforces Round 564 (Div. 1+ Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1172,1173

Codeforces Round 566 (Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1182

Codeforces Round 567 (Div. 2) starts in ~2 hours. Please, join by the link
https://codeforces.com/contests/1181

Codeforces Round 568 (Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1185?locale=en

Codeforces Round 569 (Div. 1+ Div. 2) starts in ~3 hours. Please, join by the link
https://codeforces.com/contests/1179,1180

We encountered an unexpected power outage. The expected period of system downtime is 45 minutes. The round starts with a 30-minute delay (i.e., moved forward on 30 minutes). We apologize, but this is an absolute surprise, independent of our preparation.

Polygon service will return back in ~30 minutes. At this time there may be issues with testing on the siteat this time there may be problems with testing on Codeforces.

Codeforces Round 570 (Div. 3) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1183

Codeforces Round 571 (Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1186

Hi. Take a look on the recent improvement. New: Diagnostics of Solutions in C++ (Better UI)
https://codeforces.com/blog/entry/68062

Educational Codeforces Round 67 (rated for Div.2) starts in ~4 hours. Please, join by the link https://codeforces.com/contests/1187

Codeforces Round 572 (Div. 1+ Div. 2) starts in ~4 hours. Please, join by the link
https://codeforces.com/contests/1188,1189