text: #ifndef INSTANCE_FLOWSHOP_H
  #define INSTANCE_FLOWSHOP_H
  
  #include "instance_abstract.h"
  
  struct instance_flowshop : public instance_abstract {
      instance_flowshop(const char * inst);
  
      int
      get_job_number(int id);
      int
      get_machine_number(int id);
      long
      unif(long * seed, long low, long high);
      void
      generate_instance(int id, std::ostream& stream);
  };
  
  #endif // ifndef INSTANCE_FLOWSHOP_H
  