2025年1月28日
E. Triangle Tree
摘要： E. Triangle Tree You are given a rooted tree$^{\text{∗}}$ containing $n$ vertices rooted at vertex $1$. A pair of vertices $(u,v)$ is called a good pa 阅读全文
posted @ 2025-01-28 18:42 onlyblues 阅读(61) 评论(0) 推荐(0)
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