#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); ++i)

int main() {
  int n, m, w;
  cin >> n >> m >> w;
  vector<int> a(n), b(n), c(m), d(m);
  rep(i, n) cin >> a[i];
  rep(i, n) cin >> b[i];
  rep(i, m) cin >> c[i];
  rep(i, m) cin >> d[i];
  ll ans = 0;
  rep(bit, 1 << (n + m)) {
    int wei = 0;
    ll val = 0;
    rep(i, n) {
      if (bit & (1 << i)) {
        wei += a[i];
        val += b[i];
      }
    }
    rep(i, m) {
      if (bit & (1 << (n + i))) {
        wei -= c[i];
        val -= d[i];
      }
    }
    if (0 <= wei && wei <= w) ans = max(ans, val);
  }
  cout << ans << endl;
  return 0;
}