Question: 151 Longest simple path in a directed acyclic graph Suppose that we are given a directed acyclic graph G=(V,E) with real-valued edge weights and two

151 Longest simple path in a directed acyclic graph Suppose that we are given a directed acyclic graph G=(V,E) with real-valued edge weights and two distinguished vertices s and t. Describe a dynamic-programming approach for finding a longest weighted simple path from s to t. What does the subproblem graph look like? What is the efficiency of your algorithm? Figure 15.11 Seven points in the plane, shown on a unit grid. (a) The shortest closed tour, with length approximately 24.89. This tour is not bitonic. (b) The shortest bitonic tour for the same set of points. Its length is approximately 25.58

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