/**
	author:  shobonvip
	created: 2025.03.21 21:47:13
**/

#include<bits/stdc++.h>
using namespace std;

//* ATCODER
#include<atcoder/all>
using namespace atcoder;
typedef modint998244353 mint;
//*/

/* BOOST MULTIPRECISION
#include<boost/multiprecision/cpp_int.hpp>
using namespace boost::multiprecision;
//*/

typedef long long ll;

#define rep(i, s, n) for (int i = (int)(s); i < (int)(n); i++)
#define rrep(i, s, n) for (int i = (int)(n)-1; i >= (int)(s); i--)
#define all(v) v.begin(), v.end()

template <typename T> bool chmin(T &a, const T &b) {
	if (a <= b) return false;
	a = b;
	return true;
}

template <typename T> bool chmax(T &a, const T &b) {
	if (a >= b) return false;
	a = b;
	return true;
}

template <typename T> T max(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmax(ret, a[i]);
	return ret;
}

template <typename T> T min(vector<T> &a){
	assert(!a.empty());
	T ret = a[0];
	for (int i=0; i<(int)a.size(); i++) chmin(ret, a[i]);
	return ret;
}

template <typename T> T sum(vector<T> &a){
	T ret = 0;
	for (int i=0; i<(int)a.size(); i++) ret += a[i];
	return ret;
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	
	ll a,b,c,d;
	cin>>a>>b>>c>>d;
	ll p,q,r,s;
	cin>>p>>q>>r>>s;
	vector<pair<ll,ll>>v;
	v.push_back(pair(p,a));
	v.push_back(pair(q,b));
	v.push_back(pair(r,c));
	v.push_back(pair(s,d));
	ll t;cin>>t;
	sort(all(v));
	ll ans=0;
	rep(i,0,4){
		ll targ=min(t/v[i].first,v[i].second);
		t-=targ*v[i].first;
		ans+=targ;
	}
	cout<<ans<<endl;
}