You decided to take a walk with a friend on a foggy autumn day. You made an appointment with your friend to meet in 20 minutes, but decided to go out early to walk alone with your thoughts, it was already dark enough and visibility was very poor. While you were walking, you came across a house on the street that you had never been to. You should have passed by, but you wanted to ask the residents of this house for help. You knocked on the door, and it turned out to be open, you entered the courtyard ... then you don't remember anything