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哎,无语,用C交CE,用G++ AC.

Posted by Ylemzy at 2009-08-25 02:45:33 on Problem 2157
选C,交上去,给我报了三次CE。在disscuss里看了大家的交流,对大家提供的数据都过啊。无奈,只好改为G++,没想到就轻松地过了。用了深搜,保存找到的每种keys个数,并记录经过的的门的位置。

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