(define (slist->string slst)
  (string-join (map symbol->string slst) " "))
                           
(define N (read))

(define s2
  (lambda (n) (if (<= n 1) (if (= n 1) #t #f) (s2 (/ n 2)))))


(define (list-of-sum n a)
  (if (= a 0)
      '()
    (cons (list a (- n a)) (list-of-sum n (- a 1)))))
  
  
(define (last_element l)
  (cond ((null? (cdr l)) (car l))
        (else (last_element (cdr l)))))

(let ((ans (filter (lambda (n) (and (not (s2 (list-ref n 0))) (not (s2 (list-ref n 1))))) (list-of-sum N (- N 1)))))
     (display (if (= 0 (length ans)) "-1\n" (format "~a ~a\n" (list-ref (last_element ans) 0) (list-ref (last_element ans) 1)) 
     )))