题目链接:http://acm.split.hdu.edu.cn/showproblem.php?pid=5423 Problem Description As we know, Rikka is poor at math. Yuta is worrying about this situation, so he gives Rikka some math tasks to practice. There is one of them: For a tree T, let F(T,i) be t…
Query on A Tree Time Limit: 20000/10000 MS (Java/Others) Memory Limit: 132768/132768 K (Java/Others) Total Submission(s): 712 Accepted Submission(s): 266 Problem Description Monkey A lives on a tree, he always plays on this tree. One day, monke…
题目:这里 题意: 感觉并不能表达清楚题意,所以 Problem Description In mathematics, and more specifically in graph theory, a tree is an undirected graph in which any two nodes are connected by exactly one path. In other words, any connected graph without simple cycles is a…
Problem Description XXX is very interested in algorithm. After learning the Prim algorithm and Kruskal algorithm of minimum spanning tree, XXX finds that there might be multiple solutions. Given an undirected weighted graph with n (1<=n<=100) vertex…
Is It A Tree? Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 16702 Accepted Submission(s): 3761 Problem Description A tree is a well-known data structure that is either empty (null, void, n…
Is It A Tree? Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 20416 Accepted Submission(s): 4628 Problem Description A tree is a well-known data structure that is either empty (null, void, n…
