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内详

Posted by ANewStart at 2005-04-30 10:47:00 on Problem 2422
In Reply To:不理解样例 Posted by:ANewStart at 2005-04-30 10:46:41
Sample 1:


XXW.X
XWSWX
XXX.X

我让wolf 这么走:

XX.WX
XWSWX
XXX.X

Sheep只能往上

XXSWX
XW.WX
XXX.X

然后下面那个Wolf过去

XXSWX
XWW.X
XXX.X

Sheep不就挂了么?

为什么Safe?

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