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Re:高效解法,供路人借鉴~

Posted by oyashiroshama at 2018-06-16 09:16:38 on Problem 2965
In Reply To:高效解法,供路人借鉴~ Posted by:yingxiang720 at 2011-03-15 15:20:51
你的证明有个问题,就是这句:

(简单说下:因为以上操作已经包含了所有可改变欲改变位置的操作了)

你怎么知道所有可能欲改变某个位置的操作一定在你这种设想的操作里?

就是说,我与可能有一种方法,同行同列奇数次,但并不是全部都变,而且我其它位置也有可能变。然后这样子变化会比你这种操作次数少,同时并不包括在你所说的操作之内。这个你怎么证明?

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