2019.01.23【NOIP提高组】模拟赛A&B组 JZOJ 3084 超级变变变

D e s c r i p t i o n Description Description 定义一种函数 f ( x ) = x − 1                         [ x   m o d   2 = 1 ] f ( x ) = x 2                              [ x   m o d   2 = 0 ] f(x)=x-1\ \ \ \ \ \

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