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先谢谢啊,不过这个我想到了

Posted by honghu at 2006-05-13 21:59:54 on Problem 2826
In Reply To:Re:不知为何还是WA,难道还有其他没有水的情况,请赐教 Posted by:jay23jack at 2006-05-13 21:06:56
交点是某条线的那个纵坐标较高的那点 指的就是“人”字形或是“入”字形

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