Eh, your library seems to have a very poor use of floor space. Place the shelves well and you will definitely have something that can store books proportional t

Eh, your library seems to have a very poor use of floor space. Place the shelves well and you will definitely have something that can store books proportional to the area of the library. Hint for more efficient placement: You can put shelves away from the outer wall in arbitrary positions within the circle. At that point, the assumption that the librarian can reach any point in the circle at constant time is blatantly false (as the books closer to the centre will generally be faster to reach).