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关于tag是否可以为空

Posted by ffbh at 2016-07-09 12:52:39 on Problem 3820
In Reply To:注意 Posted by:thirdthk at 2011-03-24 14:20:34
if (tag.length() == 0)
	return 0;

以上两行代码,我注释或不注释提交都AC了,估计是根本没有tag为空的数据,或者tag为空的那组数据还有其他错误

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