("level", po::value<int>(&level)->default_value(3), "Level to reach (higher->slower)")
("size", po::value<int>(&field_size)->default_value(10), "Size of the field")
("form", po::value<std::string>(&form)->default_value("box"), "Form of the polygons (box, triangle)")
("level", po::value<int>(&level)->default_value(3), "Level to reach (higher->slower)")
("size", po::value<int>(&field_size)->default_value(10), "Size of the field")
("form", po::value<std::string>(&form)->default_value("box"), "Form of the polygons (box, triangle)")