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We define illegal edges as edges that are traversed in reverse. Suppose there is an edge from a-->b but you wanna traverse it in the
We define illegal edges as edges that are traversed in reverse. Suppose there is an edge from a-->b but you wanna traverse it in the opposite direction b-->a regardless of the fact that there is no edge b-->a, that becomes an illegal edge.
Give a linear-time algorithm that computes a path from s to t that minimizes the number of illegal edges given a directed graph G and locations s and t as input using Dijkstra's algorithm.
Hint: solve this by reduction to a standard single-source shortest path problem.
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