text: #pragma once
  #include "problem.hpp"
  #include "solver.hpp"
  
  namespace crowdy {
      /* METIS-based solver. Improves a naive graph partition. */
      class METISSolver : public Solver<METISSolver> {
      private:
          static Solution _solve(const Problem & prob);
          friend class Solver<METISSolver>;
      };
  }
  