随笔分类 -  图论---LCA

摘要：After the long vacation, the maze designer master has to do his job. A tour company gives him a map which is a rectangle. The map consists of N \times 阅读全文

摘要：Traffic Network in NumazuTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 677... 阅读全文

摘要：Yixght is a manager of the company called SzqNetwork(SN). Now she's very worried because she has just received a bad news which denote... 阅读全文

摘要：There are N cities in a country, and there is one and only one simple path between each pair of cities. A merchant has chosen some pat... 阅读全文

摘要：Pog and Szh are playing games. Firstly Pog draw a tree on the paper. Here we define 1 as the root of the tree.Then Szh choose some nod... 阅读全文