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

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m, w;
  cin >> n >> m >> w;
  vector<pair<int, long long>> merch(n);
  for (int i=0;i<n;++i) cin >> merch[i].first;
  for (int i=0;i<n;++i) cin >> merch[i].second;
  vector<pair<int, long long>> magic(m);
  for (int i=0;i<m;++i) cin >> magic[i].first;
  for (int i=0;i<m;++i) cin >> magic[i].second;

  long long ans {};
  for (int i=1;i<(1<<(n+m));++i) {
    pair<int, long long> ans_tmp {};
    vector<int> weights;
    for (int j=0;j<n;++j) {
      if (i & (1<<j)) {
        weights.push_back(merch[j].first);
        ans_tmp.second += merch[j].second;
      }
    }
    for (int j=n;j<n+m;++j) {
      if (i & (1<<j)) {
        weights.push_back(-magic[j-n].first);
        ans_tmp.second -= magic[j-n].second;
      }
    }
    sort(weights.begin(), weights.end());
    if (weights[0] < -w) continue;
    if (w < weights[weights.size()-1]) continue;
    ans_tmp.first = accumulate(weights.begin(), weights.end(), 0ll);
    //cout << ans_tmp.first << ' ' << ans_tmp.second << '\n';
    if (ans_tmp.first <= w) ans = max(ans, ans_tmp.second);
  }
  cout << ans << '\n';
}