#include <atcoder/all>
#include <bits/stdc++.h>
#define rep(i, a, b) for (ll i = (ll)(a); i < (ll)(b); i++)
using namespace atcoder;
using namespace std;

typedef long long ll;

int main() {
    cin.tie(0);
    cout.tie(0);
    ios::sync_with_stdio(0);
    vector<ll> a(4), b(4);
    rep(i, 0, 4) cin >> a[i];
    rep(i, 0, 4) cin >> b[i];
    rep(i, 0, 4) rep(j, 0, 3) {
        if (b[j] > b[j + 1]) {
            swap(a[j], a[j + 1]);
            swap(b[j], b[j + 1]);
        }
    }
    ll t;
    cin >> t;
    ll ans = 0;
    rep(i, 0, 4) {
        ll add = min(t / b[i], a[i]);
        t -= add * b[i];
        ans += add;
    }
    cout << ans << endl;
}