(use scheme.base)
(use scheme.read)
(use scheme.write)
(use gauche.base)
(use srfi.152)


(define yuki9014
  (let*
    (
      (jmb (map string->number (string-split (read-line) ",")))
      (j (car jmb))
      (m (car (cdr jmb)))
      (b (car (cdr (cdr jmb))))
    )
    (format #t "合計点:~d~%" (apply + jmb))
    (format #t "平均点:~,1f~%" (/ (+ j m b) 3))
  )
)