#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c, d[100], n;
  cin >> n >> a >> b >> c;
  for (int i = 0; i < n; i++) {
    cin >> d[i];
  }
  sort(d, d + n, greater<int>());
  for (int i = 0; i < n; i++) {
    d[i + 1] += d[i];
  }
  int max;
  max = c / a;
  for (int i = 0; i < n; i++) {
    int e = (c + d[i]) / (a + (i * b) + b);
    if (max <= e) {
      max = e;
    }
  }
  cout << max << endl;
  return 0;
}
