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我也是..

Posted by crackerwang at 2007-06-20 13:29:35 on Problem 3070
In Reply To:告诉我们矩阵有什么用呢 Posted by:dusty at 2006-11-03 08:44:26
> 完全可以不用那些信息,不过做题的时候还是往那个矩阵方向想了很久,没有发现矩阵有什么作用

我也是..

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