I am working on a POI problem: http://main.edu.pl/en/archive/oi/14/zap. I have an 
solution, but I would like to know whether there is an O(n·log(n) + a·log(a)) solution.
I am working on a POI problem: http://main.edu.pl/en/archive/oi/14/zap. I have an solution, but I would like to know whether there is an O(n·log(n) + a·log(a)) solution.
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What is your O(n * / sqrt(a)) solution?
Euler function?