Question: Given a directed graph G = (V, R), pick a maximum cardinality set of edges from E so that the result graph is acyclic. The

Given a directed graph G = (V, R), pick a maximum

Given a directed graph G = (V, R), pick a maximum cardinality set of edges from E so that the result graph is acyclic. The left graph below has a directed cycle, but the right graph does not have any directed cycle, but the right graph does not have any directed cycle. So the right graph is acyclic. Give a factor 1/2 approximation algorithm for this

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