线段树转移矩阵
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Cherry_0525
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【DP+线段树转移矩阵】CF Good Bye 2016 E. New Year and Old Subsequence
http://codeforces.com/contest/750/problem/E A stringtis calledniceif a string "2017" occurs intas asubsequencebut a string "2016" doesn't occur intas asubsequence. For example, strings "20...原创 2019-09-09 15:05:31 · 176 阅读 · 0 评论 -
【DP+线段树转移矩阵】2019南昌ICPC网络赛 C. Hello 2019
https://nanti.jisuanke.com/t/41350 A digital string is "good": when it contains a subsequence91029102and does not contain a subsequence81028102. The bad value of a string is defined as how many c...原创 2019-09-09 15:20:22 · 308 阅读 · 0 评论