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直接判断四周的中点与宝藏的连线这种方法会有问题

Posted by mznanan at 2011-02-01 12:13:19 on Problem 1066
只是数据弱把。。
直接判断四周的中点与宝藏的连线这种方法会有问题。
比如有一条线段,并没有阻碍某一点与宝藏的连线。。但是阻断到了他与某一条阻碍他与宝藏的墙壁的中点

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