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另外，从Sample Output可以看出，答案很大，不可能把所有排列都找出来。这又使我原先的一些想法破灭。真伤脑筋啊。In Reply To:想不出怎么做，先谈一下我的一点初步想法，请AC的同学帮我看看对不对。 Posted by:ImLazy at 2007-01-05 22:13:14 Followed by: Post your reply here: |
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