问题描述：
a woman has to take acat, a mouse and a dog across a river in a small boat. she can only take
a woman has to take acat, a mouse and a dog across a river in a small boat.
she can only take one thing with her at a time .how can she take them all across without the dog eating the cat eating the mouse?
a woman has to take acat, a mouse and a dog across a river in a small boat.
she can only take one thing with her at a time .how can she take them all across without the dog eating the cat eating the mouse?
问题解答：
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