不知道是不是我想的有问题
![](https://cdn.luogu.com.cn/upload/image_hosting/3so6owwz.png?x-oss-process=image/resize,m_lfit,h_1700,w_2250)
by ivyjiao @ 2024-02-08 21:05:06
1->3->2->5
可以免费建一个所以不用付2->5(l=9)的钱,剩下1->3(4),3->2(3)中最大值为4
@[ivyjiao](/user/578029)
by 云雷心柠檬听 @ 2024-02-08 21:11:40
@[云雷心柠檬听](/user/305296) thx
by ivyjiao @ 2024-02-08 21:12:46