因为题目看错所以只会用可并堆和树剖写这题的蒟蒻QAQ

P3018 [USACO11MAR] Tree Decoration G

TQL
by Cobalt @ 2018-10-05 18:13:24


奆啊
by Stella_Yan @ 2018-10-05 18:28:39


学姐太强啦%%%
by 李也帅 @ 2018-10-05 18:30:37


|