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楼下的说法有问题 我就是错信了楼下

Posted by 20123751 at 2014-07-27 23:09:11 on Problem 2337
楼下这么说:
aa
ab
aba
ba
bb

正确结果
aa.aba.ab.bb.ba


错误结果
aa.ab.bb.ba.aba

这种说法是有问题的,字典序aba>ab 所以aa.ab.bb.ba.aba才是正确结果-----开始的时候我没动脑子,错信了这个想法 WA了好几个小时啊,,,,

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