package main

import (
	"fmt"
)

func main() {
	var L, M, N, c int
	fmt.Scan(&L, &M, &N)
	c, N = change(N, 25)
	M += c
	c, M = change(M, 4)
	L += c
	_, L = change(L, 10)
	fmt.Println(L + M + N)
}

func change(coin, rate int) (large, small int) {
	return coin / rate, coin % rate
}