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终于来做题了啊，你

Posted by hawk at 2004-03-16 18:02:11 on Problem 1600
In Reply To:这题面对面的撞在一起怎么算？ Posted by:daofeng at 2004-03-16 17:47:00 
> 
> 就说sample里的,5、6两个为什么不能撞在23,10
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