Connectivity in a directed graph
Given a directed graph, find out whether the graph is strongly connected or n
BZOJ 1002([FJOI2007]輪狀病毒-基爾霍夫矩陣)
1002: [FJOI2007]輪狀病毒 Time Limit: 1 Sec Memory Limit: 162 MB Submit: 140
HDU/HDOJ 1548 A strange lift BFS,DFS
我用兩種方法做,DFS沒有AC,不知道錯在哪裡,貼出來有大神撸過不吝賜教,第二種經典方法BFS過了,76MS 360k,思路都很簡單,也是一道很規范的廣度