摘要：最短路（vector+Dijkstra优先队列优化） #include<cstdio> #include<iostream> #include<cstring> #include<algorithm> #include<queue> #include<stack> #include<set> #in 阅读全文

摘要：Building and maintaining roads among communities in the far North is an expensive business. With this in mind, the roads are build such that there is 阅读全文