M – 畅通工程再续（之切水题真爽）
相信大家都听说一个“百岛湖”的地方吧，百岛湖的居民生活在不同的小岛中，当他们想去其他的小岛时都要通过 …
J – Borg Maze （bfs+K树（P树））
The Borg is an immensely powerful race of enhanced …
I – Agri-Net
Farmer John has been elected mayor of his town! On …
H – Highways
The island nation of Flatopia is perfectly flat. U …
prim的邻接表（STL）实现
https://www.cnblogs.com/dzkang2011/p/prim_1.html # …
G – Arctic Network
The Department of National Defence (DND) wishes to …
F – Truck History
Advanced Cargo Movement, Ltd. uses trucks of diffe …
Prim算法（稠密图）
const int INF=0x3f3f3f3f; const int MAXN=2018; boo …
E – QS Network
Sunny Cup 2003 – Preliminary Round April 20t …
D – Constructing Roads
There are N villages, which are numbered from 1 to …