蒟蒻的博客

题目描述 Once in a forest, there lived N aggressive monkeys. At the beginning, they each does things in its own way and none of them knows each other. But monkeys can't avoid quarrelling, and it only hap

题目描述有N个节点，标号从1到N，这N个节点一开始相互不连通。第i个节点的初始权值为a[i]，接下来有如下一些操作：U x y: 加一条边，连接第x个节点和第y个节点A1 x v: 将第x个节点的权值增加vA2 x v: 将第x个节点所在的连通块的所有节点的权值都增加vA3 v: 将所有节点的权值都增加vF1 x: 输出第x个节点当前的权值F2 x: 输出第x个节点所在的连通块中，权值最大的节点的...