#include <bits/stdc++.h>
using namespace std;
int main() {
  int N, A, B, C, array[100], i, result = 0, kari;
  scanf("%d", &N);
  scanf("%d %d", &A, &B);
  scanf("%d", &C);
  for (i = 0; i < N; i++) scanf("%d", &array[i]);
  sort(array, array + N);
  reverse(array, array + N);
  for (i = 0; i < N; i++) {
    kari = C / (A + B * i);
    if (kari > result) result = kari;
    C += array[i];
  }
  printf("%d\n", result);
  return 0;
}
