Help with Ai's story safe code

[Pixelcakei]

I simply do not understand what I'm supposed to do to open this safe, any help would be appreciated

[NarkoLis]

Do you see the map on the wall in the piano room? So, this is a map of all the rooms, it marks the room where the exit is located, and also marks the room at coordinates 4488. Find the coordinates of the piano room and enter them into the safe. Look for the coordinates of the piano room based on the position of the room with the exit from the level.