#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, ck, ct, ki;
  cin >> n;
  cin >> ck >> ct >> ki;
  int top[n], cost = ck, ans;
  for (int i = 0; i < n; i++) cin >> top[i];
  sort(top, top + n, greater<int>());
  ans = ki / cost;
  for (int i = 0; i < n; i++) {
    ki += top[i];
    cost += ct;
    if (ans < ki / cost)
      ans = ki / cost;
    else
      goto END;
  }
END:
  cout << ans << endl;
  return 0;
}
