#include <bits/stdc++.h>
using namespace std;
int main() {
  vector<long long> v;
  map<string, int> n;
  long long d = 0, e = 0, i, f = 0, g = 0, j, k = 1, l = 0, r = 1, z, m, h,
            p[101];
  string y, t;
  double a, b, c, q, u, s, x = 10000000;
  cin >> a >> b >> c;
  for (i = 1; i <= a; i++) {
    cin >> p[i];
  }
  cin >> q >> u;
  for (i = 1; i <= a; i++) {
    s = p[i] / b + sqrt((q - p[i]) * (q - p[i]) + u * u) / c;
    if (s <= x && i > 1) {
      x = s;
      d = i;
    }
  }
  cout << d;
}
