{
  "sessions": ["repaso", "practica", "tutoria"],
  "slots": ["lun_09", "lun_11", "mar_09", "mar_11"],
  "rooms": ["Aula", "Lab"],
  "constraints": {
    "unique_slot": true,
    "practica_room": "Lab",
    "repaso_before_practica": true,
    "tutoria_day_prefix": "mar"
  }
}