#include <bits/stdc++.h>
using namespace std;
void _main();
int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	_main();
	return 0;
}
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using vi = std::vector<int>;
using vvi = std::vector<vi>;
using vl = std::vector<ll>;
using vii = std::vector<pair<int, int> >;
using vvl = std::vector<vl>;
using vll = std::vector<pair<ll , ll> >;
using vd = std::vector<double>;
using vvd = std::vector<vd>;
using vs = std::vector<std::string>;
using vvs = std::vector<vs>;
using vb = std::vector<bool>;
using vvb = std::vector<vb>;
using vc = std::vector<char>;
using vvc = std::vector<vc>;
using pii = std::pair<int, int>;
using pll = std::pair<ll, ll>;
using piil = std::pair<pair<int, int>, ll>;
using mii = std::map<int, int>;
using mll = std::map<ll, ll>;
using pql = std::priority_queue<ll>;
using pqi = std::priority_queue<int>;
using pqiil = std::priority_queue<pair<pair<int, int>, ll> >;
using pqii = std::priority_queue<pair<int, int> >;

#define pb push_back
#define ps push
#define eb emplace_back
#define is insert
#define er erase
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define sf(i) sizeof(i)
#define endl "\n"
#define sz(v) ((int)(v).size())
#define all(v) (v).begin(), (v).end()
#define rep(i, L, R) for(ll i = L;i<=R;i++)
#define pcis precision

template<typename T>
struct infinity {
	static constexpr T max=std::numeric_limits<T>::max();
	static constexpr T min=std::numeric_limits<T>::min();
	static constexpr T value=std::numeric_limits<T>::max()/2;
	static constexpr T mvalue=std::numeric_limits<T>::min()/2;
};
template<typename T>constexpr T INF=infinity<T>::value;
constexpr ll lINF=INF<ll>;
constexpr int iINF = INF<int>;
constexpr ld PI = 3.1415926535897932384626;

bool cmp(pll a, pll b) {
	if (a.f*b.s == b.f*a.s) {
		return a.f<b.f;
	}
	return a.s*b.f > b.s*a.f;
}

void _main() {

	ll N, M, W;
	cin >>N >>M >>W;
	vll lst;
	for (ll i = 1; i<=N; i++) {
		ll A;
		cin >> A;
		lst.pb({1, A});
	}
	pll A[N+1];
	for (ll i = 1; i<=M; i++) {
		cin >> A[i].f;
	}
	for (ll i = 1; i<=M; i++) {
		cin >> A[i].s;
	}
	for (ll i = 1; i<=M; i++) {
		lst.pb(A[i]);
	}
	// C/B가 ㅈㄴ 커야함
	sort(all(lst), cmp);
	ll MX = 0;
	ll nokori = W;
	for (auto [b,c] : lst) {
		if (b<=nokori) {
			nokori-=b;
			MX += c;
		}
		if (nokori==0)break;
	}
	cout << MX;






}