package main

import . "fmt"
import . "sort"

func main() {
	var a,b,c,d,p,q,r,s,t int64
	Scan(&a,&b,&c,&d,&p,&q,&r,&s,&t)
	var ans int64
	w:=[]int64{
		a,b,c,d,
	}
	z:=[]int64{
		p,q,r,s,
	}
	e:=[]int{0,1,2,3}
	Slice(e,func(i,j int)bool{
		return z[e[i]]<z[e[j]]
	})
	for _,i:= range e{
		if t<w[i]*z[i] {
			w[i]=t/z[i]
		}
		ans+=w[i]
		t-=w[i]*z[i]
	}
	Println(ans)
}