package main

import "fmt"

func main() {
	var L, M, N, sum int
	fmt.Scan(&L, &M, &N)
	sum = 100*L + 25*M + N
	s := sum / 1000
	sum -= s * 1000
	h := sum / 100
	sum -= h * 100
	q := sum / 25
	sum -= q * 25
	fmt.Println(h + q + sum)
}