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Discussion of Problem 1798. Fire Circle. Version 2

New problem 1798 "Fire Circle. Version 2" was added!
Posted by Sandro (USU) 2 Aug 2015 11:34
It is the problem 1490 "Fire Circle" with the limitation of R equal to 10^9 instead of 10^5. If you have an efficient solution of problem 1490, try to solve this one.

Edited by author 02.08.2015 11:36
Re: New problem 1798 "Fire Circle. Version 2" was added!
Posted by MVM 6 Aug 2015 05:45
"Площадъю миллион квадратных километров"

За пределами зала плит нет?