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Re:套环的情况算不算

Posted by 36789 at 2007-09-30 13:11:28 on Problem 2278
In Reply To:套环的情况算不算 Posted by:hong_liming at 2005-04-05 19:34:28

> XXXXXXXXXX
> X........X
> X...XX...X
> X...XX...X
> X........X
> X........X
> XXXXXXXXXX
> 里边的算不算


同问啊！！！！哪位过了的仁兄指点一下啊~~

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