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好强。我是写出来归纳的。虽然是错误的……

Posted by baicaited at 2009-04-10 21:41:09 on Problem 2229
In Reply To:要推也很“容易”啊,不过我郁闷了两天才发现是这么简单的…… Posted by:frkstyc at 2005-06-14 20:09:07
> 如果是奇数的话肯定有一个1,所以可以拿掉
> 如果是偶数的话,要么有两个1,或者全是偶数,前者就拿掉两个1,后者就全部除2
> 所以就是那样子啦

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