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目前想到的一点优化是：即使16个数平分成两份的分法不同，但是等式一边的4个数可能出现重复的情况。从这一点入手可以做一些优化。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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