Today due to a power outage there may be disruptions in the work of Codeforces and Polygon. Please do not plan any important events during this time. If there are details or the exact time, we will definitely publish them. Estimated time of maintenance: from 3 Aug, 14:30 (UTC) to 3 Aug, 18:00 (UTC). ×

 
 
 
 
Candidate Master

pva701

Ilya Peresadin, Saint Petersburg, Russia