摘要：洛谷 P1444 [USACO1.3]虫洞wormhole https://www.luogu.org/problemnew/show/P1444 JDOJ 2386: USACO 2013 Dec Bronze 3.Wormholes https://neooj.com:8082/oldoj/pr 阅读全文

摘要：Nearest Common Ancestors http://poj.org/problem?id=1330 Description A rooted tree is a well-known data structure in computer science and engineering. 阅读全文