package main

import "fmt"

func main() {
	var l, m, n int
	fmt.Scan(&l, &m, &n)

	sum := l*100 + m*25 + n

	_ = sum / 1000
	sum %= 1000
	b := sum / 100
	sum %= 100
	c := sum / 25
	sum %= 25
	d := sum
	fmt.Println(b + c + d)
}