package main

import "fmt"

func main() {
	var l, m, n int
	fmt.Scanf("%v", &l)
	fmt.Scanf("%v", &m)
	fmt.Scanf("%v", &n)
	sum := l*100 + m*25 + n
	r := map[int]int{1000: 0, 100: 0, 25: 0, 1: 0}
	for _, k := range []int{1000, 100, 25, 1} {
		r[k] = sum / k
		sum = sum - k*r[k]
		if sum < 0 {
			break
		}
	}
	fmt.Printf("%d\n", r[100]+r[25]+r[1])
}