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Re:找同列最大值时，不找2就行。

Posted by stool233 at 2016-12-20 11:56:57 on Problem 1166 and last updated at 2016-12-20 11:58:32
In Reply To:为什么消元时找同列最大值交换就会错呢？ Posted by:15110581016 at 2016-11-29 20:40:20 
> 改成找第一个非零元交换就对了QAQ，不知道前面哪里错了
找同列最大值时，不找2就行。
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