8 thoughts on “My First Problem on SPOJ

  1. 回复WJBZBMR:反着跑。其实我多校本来想出这个题的sa以后就转化成 一个区间里有多少个不重复的数了 用这个题的方法就可以了http://acm.hdu.edu.cn/showproblem.php?pid=3333结果被别人AC自动机秒杀了

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