2023年8月10日
题解 Gym 102978F【Find the LCA】
摘要： ## problem You are given an integer sequence $A_1,A_2,\ldots,A_N$. You'll make a rooted tree with $N$ vertices numbered from $1$ through $N$. The vert 阅读全文
posted @ 2023-08-10 23:01 caijianhong 阅读(47) 评论(0) 推荐(0) 编辑