2018年4月11日
CodeForces 916E Jamie and Tree(树链剖分+LCA)
摘要： To your surprise, Jamie is the final boss! Ehehehe. Jamie has given you a tree with n vertices, numbered from 1 to n. Initially, the root of the tree 阅读全文
posted @ 2018-04-11 14:53 Styx-ferryman 阅读(297) 评论(0) 推荐(0) 编辑