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minimum_cost_flow (266B)

      1 # Minimum cost flow
      2 
      3 https://en.wikipedia.org/wiki/Minimum-cost_flow_problem
      4 
      5 You want to send a certain amount of flow through a [flow_network], but edges have costs and you want to minimize the cost
      6 
      7 Solvable in [PTIME] by [linear_programming]
      8 
      9 Up: [network_flow]