HDU - 6280 From Tree to Graph (并查集+LCA)(2018CCPC湘潭邀请赛E)From Tree to Graph
From Tree to GraphTime Limit: 10000/5000 MS (Java/Others) Memory Limit: 327680/327680 K (Java/Others)Total Submission(s): 11 Accepted Submission(s): 6Problem DescriptionBobo has a tree of n vert...