package main

import "fmt"

func scan() (int, int, int) {
	var L, M, N int
	fmt.Scan(&L, &M, &N)
	return L, M, N
}

func divmod(numerator, denominator int) (quotient, remainder int) {
	quotient = numerator / denominator
	remainder = numerator % denominator
	return
}

func main() {
	L, M, N := scan()
	// L, M, N := 7, 20, 10
	sum := L*100 + M*25 + N*1
	_, r1000 := divmod(sum, 1000)
	q100, r100 := divmod(r1000, 100)
	q25, r25 := divmod(r100, 25)

	fmt.Print(q100 + q25 + r25)
}