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AC了，给大家提供一组易错的数据

Posted by sunset at 2007-05-27 22:39:14 on Problem 1816
In Reply To:WA死了，请教此题阴险的地方，谢谢! Posted by:sunset at 2007-05-27 21:18:04 
3 2
b?g*
b?g*
?ft??
bags
wftke

就是说有重复的patterns串，用trie的要注意这个地方
我是用并查集处理这个问题的，hoho，尽管比较弱
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