50, 25, 10, 5, 1 セントのコインでaドルを何通りで表すことができるか。http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-11.html#%_sec_1.2.2 (define (count-change amount) (cc amount 5)) (define (cc amount kinds-of-coins) (cond ((= amount 0…