VEXOBEN
dsu on tree,即树上启发式合并,是一种离线算法,结合树链剖分,可以处理与子树有关的许多询问。 Read more
Vexoben
Jul 10, 2018
题目链接:http://codeforces.com/contest/196/problem/C Read more
Vexoben
Jul 7, 2018
题目链接:https://www.lydsy.com/JudgeOnline/problem.php?id=3110 Read more
Vexoben
Jul 2, 2018
题目链接:https://www.lydsy.com/JudgeOnline/problem.php?id=2597 Read more
Vexoben
Jun 28, 2018
题目链接:https://www.lydsy.com/JudgeOnline/problem.php?id=3143 Read more
Vexoben
Jun 26, 2018