#include <bits/stdc++.h>
using namespace std;
int main() {
  int N, B_val, total_val, total_ca, ans, temp;
  cin >> N;
  int B_ca[N];
  cin >> total_val >> B_val;
  cin >> total_ca;
  for (int i = 0; i < N; i++) cin >> B_ca[i];
  sort(B_ca, B_ca + N, greater<int>());
  for (int i = 0; i < N; i++) {
    temp = total_ca / total_val;
    ans = max(ans, temp);
    total_ca += B_ca[i];
    total_val += B_val;
  }
  cout << ans << endl;
  return 0;
}
