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不是很明白，感觉状态的转移可以优化，也可以用双向搜索，就是不知道能不能过In Reply To:”注意到0->a的状态和a->0的状态需要的时间一样，所以可以用这个卡界“ 这句话是什么意思呢。。。不太容易懂 Posted by:chaeyeon at 2008-11-26 12:59:11 Followed by:
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