20211109 Codeforces Round #551 (Div. 2) ABCD 题解
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比赛链接
A. Serval and Bus By 刘鑫龙
B. Serval and Toy Bricks By 陈代睿
C. Serval and Parenthesis Sequence By 李昊坤
D. Serval and Rooted Tree By 王励翔
已更新 B 题
标签：ABCD,Toy,题解,551,Serval,陈代睿 来源： https://www.cnblogs.com/QLU-ACM/p/15531060.html