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呵呵，当时只是随便判了一下两个cross product就交了，漏了共线的情况

Posted by frkstyc at 2005-10-12 13:59:51 on Problem 1127
In Reply To:还请frkstyc说一下哪里被阴了? Posted by:CAY at 2005-10-12 13:57:52 
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