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shortest_path_almost (257B)

      1 # Shortest path almost
      2 
      3 in a [graph_directed], is there a [simple_path] from source to sink whose length is longer than the shortest path?
      4 
      5 tractable on [planar_graph]: cf [wu2015next]
      6 
      7 [parameterized_complexity]: [bezakova2017finding]
      8 
      9 Up: [shortest_path]