#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, a, b, c;
  cin >> n >> a >> b >> c;
  int d[10001];
  for (int i = 0; i < n; i++) cin >> d[i];
  sort(d, d + n);
  int cal = 0, co = 0;
  for (int i = n - 1; i >= 0; i--)
    if ((cal + d[i] + c) / ((co + 1) * b + a) > (cal + c) / (co * b + a))
      cal += d[i], co++;
    else
      break;
  cout << (cal + c) / (co * b + a) << endl;
}
