(use scheme.list)
(use util.match)

(define input read-line)

(define (ii)
  (string->number (read-line)))

(define (li)
  (let ((s (read-line)))
    (map string->number (string-split s " "))))

(define (prn . args)
  (for-each (lambda (i x)
              (when (> i 0)
                (display " "))
              (display x))
            (iota (length args))
            args)
  (newline))


(define (min&max* xs) (apply min&max xs))
(define (sum . xs) (apply + xs))
(define (sum* xs) (apply + xs))

(let* ((s (input)))
  (match (map string->number (string-split s ","))
    ((a b c)
     (format #t "合計点:~d\n" (sum a b c))
     (format #t "平均点:~,1f\n" (/. (sum a b c) 3)))))