o r n s

o oo bo po mo fo.

927 a o e oao 928.

oo1.

o(x)o(x)

2011 1 .

O (n)O (n log n) .

. ,,.. dbzhang800DJKK.

0x8007045DI/O CMD Win + R CMD .

byrut.rog byrut

2011 1 .