题意不好懂，弄懂题意，就是洒洒水了

P1241 括号序列

youyukyc @ 2021-01-01 23:52:29

参见大佬@YuJieSong 的题解

by youyukyc @ 2021-01-01 23:54:24

https://www.luogu.com.cn/blog/YuJieSong/solution-p1241

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