1 665c255d 2023-08-04 jrmu (defun count-leaves (tree) 2 665c255d 2023-08-04 jrmu (accumulate 3 665c255d 2023-08-04 jrmu (lambda (x y) 4 665c255d 2023-08-04 jrmu (+ y 5 665c255d 2023-08-04 jrmu (if (consp x) 6 665c255d 2023-08-04 jrmu (count-leaves x) 7 665c255d 2023-08-04 jrmu 1))) 8 665c255d 2023-08-04 jrmu 0 9 665c255d 2023-08-04 jrmu tree))