(defun f (N)
  "Compute the factorial of N."
  (if (= N 1)
      1
    (* N (factorial (- N 1)))))
 
(setq a 18)
(setq b 64)
(setq c 22)
(setq y 14)
(defun g (m n)
  (if (> m n)
    m
    n))
(+(+ a b)(*(+(g a c)(+(g a b)(*(+(+(* b c)a)c)c)c)c)(f y)))