Identifying Edges on Shortest Paths in Directed Graphs
To determine which edges can lie on a shortest path from source S to target T in a directed graph, compute shortest distances from S to all nodes. Then, perform a reverse BFS starting from T on the transposed graph. For each dequeued node cur and its neighbor nex in the transposed graph, if Dist[nex] == Dist[cur] - weight(cur->nex) holds, th ...
Posted on Sat, 16 May 2026 15:21:00 +0000 by dustinnoe