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嗯……改成这样之后79ms了...@_@In Reply To:我做矩阵乘法的时候是先枚举一个矩阵a的第i行第j列，如果a[i][j]=0的话，下面的一层循环就可以不要了。 Posted by:ASCII at 2009-05-17 19:23:44 Followed by:
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