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这题其实完全不用hash，只是利用trie这个自动机的特殊性来方便操作，本质还是自动机最小化的集合划分法具体看这里 http://hi.baidu.com/zaku100/blog/item/420efaeee1d8083dadafd5e5.html Followed by: Post your reply here: |
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