S3 SHELVE
One cart. A book in the wrong row comes back.
Design
A book in the wrong row comes back, and the third return loses the cart. The win is an empty cart, not a pile of books you managed to keep.
One cart. A book in the wrong row comes back.
A book in the wrong row comes back, and the third return loses the cart. The win is an empty cart, not a pile of books you managed to keep.