蜜汁硫化汞
by peterwuyihong @ 2021-02-24 22:01:42
说真的挺不喜欢这种写法，推荐[剖他](https://oi-wiki.org/graph/hld/)
by peterwuyihong @ 2021-02-24 22:08:43
谢谢巨佬，已学习，代码少了几十行，并且过了题
by LXH5514 @ 2021-02-25 21:04:48