Constructor/Selector for Representation 1

Constructor:
     (define make-game-state
       (lambda (i j) (+ (* 10 i) j)))
Selector:
     (define size-of-pile
       (lambda (game-state pile-number)
         (if (= pile-number 1)
             (quotient game-state 10)
             (remainder game-state 10))))

Q: What is the order of growth of size-of-pile?