Codechef 13.8 PRIMEDST 树分治+FFT

Nov 10, 2015 01:36:53 PM

 

Tags: FFT 点分治 树分治
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BZOJ3451:Tyvj1953 Normal 树分治+期望+FFT

Dec 30, 2014 02:09:20 PM

 

Tags: FFT 期望 树分治
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