#include "bits/stdc++.h"
using namespace std;
int main()
{
int n, a, b, c;
scanf("%d\n%d %d\n%d", &n, &a, &b, &c);
int d[n];
for (int i = 0; i < n; i++)
{
scanf("%d", &d[i]);
}
sort(d, d + n, greater<int>());
int mx = (int)(c / a);
for (int i = 1, j = d[0]; i <= n; j += d[i], i++)
{
mx = max(mx, (int)((c + j) / (a + b * i)));
}
printf("%d\n", mx);
}