#include <bits/stdc++.h>
using namespace std;
double dist(int x0, int y0, int x1, int y1) {
  return sqrt(double(x0 - x1) * double(x0 - x1) +
              double(y0 - y1) * double(y0 - y1));
}
int main() {
  int n, vb, vs, xu, yu, xbus;
  double best = 1e20;
  cin >> n >> vb >> vs;
  vector<int> vv;
  for (int i = 0; i < n; i++) {
    cin >> xbus;
    vv.push_back(xbus);
  }
  cin >> xu >> yu;
  int ans = -1;
  for (int i = 1; i < n; i++) {
    double tmp = vv[i] / (double)vb + dist(vv[i], 0, xu, yu) / double(vs);
    if (tmp - best < 1e-9) {
      ans = i + 1;
      best = tmp;
    }
  }
  cout << ans;
  return 0;
}
