(define(fatorial n)
(if(= n 0)1
(* n (fatorial(- n 1)))))
(write(fatorial 5))
(define(comb n p))
(fatorial n )/ (fatorial(p) * fatorial(- n p) )
(write(comb 4 5))
KGRlZmluZShmYXRvcmlhbCBuKQogICAgIChpZig9IG4gMCkxCiAgICAgICAgKCogbiAoZmF0b3JpYWwoLSBuIDEpKSkpKQogCih3cml0ZShmYXRvcmlhbCA1KSkKCihkZWZpbmUoY29tYiBuIHApKQogICAgIChmYXRvcmlhbCBuICkvIChmYXRvcmlhbChwKSAqIGZhdG9yaWFsKC0gbiBwKSApIAoKKHdyaXRlKGNvbWIgNCA1KSk=