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括号内是无序的 k个数 进行全排列时 会使结果变多In Reply To:不理解题意啊，哪位大牛解释一下，或者进来看看我的理解哪里不对。 Posted by:ReGoACM at 2006-11-21 20:48:36 Followed by: Post your reply here: |
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