package main

import "fmt"

func main() {
	var L, M, N int
	fmt.Scan(&L, &M, &N)

	c1 := N / 25
	M += c1
	N -= c1 * 25

	c2 := M / 4
	L += c2
	M -= c2 * 4

	c3 := L / 10
	L -= c3 * 10

	fmt.Println(L + M + N)
}