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明白了，不过感觉挺恶心的，是不是要用到什么定理或什么的啊？什么巧妙的算法吗？In Reply To:就是给你一个置换a,证明它是否可以表示为一个置换b的平方 Posted by:ArXoR at 2006-12-03 15:33:27 Followed by: Post your reply here: |
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