Web Reference: We visit each node at some time, and if that time is better than the fastest time we've reached this node, we travel along outgoing edges in sorted order. Alternatively, we could use Dijkstra's algorithm. The Network Delay Time problem involves finding the time it takes for a signal to travel from a given source node k to all other nodes in a directed, weighted graph. The solution uses Dijkstra's algorithm to find the shortest paths from node k to all other nodes, then returns the maximum of these shortest distances to determine when all nodes have received the signal.
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