25 TCanvas* m_canvas =
nullptr;
26 TGraph* m_graph_bound =
nullptr;
27 TGraph* m_graph_obj =
nullptr;
28 int m_n_points_bound = 0;
29 int m_n_points_obj = 0;
30 std::optional<double> m_worst_bound;
31 std::optional<double> m_worst_obj;
32 std::optional<double> m_best_obj;
33 std::optional<double> m_best_bound;