#!/usr/bin/env gosh

(define (main _)
  (let* ([l (read)]
	 [m (read)]
	 [n (read)]
	 [amt (+ (* 100 l)(* 25 m) n)])
    (let*-values
	([(r1000) (remainder amt 1000)]
	 [(d100 r100) (quotient&remainder r1000 100)]
	 [(d25 r25) (quotient&remainder r100 25)])
      (display (+ d100 d25 r25))))
  (newline)
  0)