#include <bits/stdc++.h>
using namespace std;
int a[101];
int main() {
  double n, v1, v2, x0, y0, mn = 1e9, k, ans;
  cin >> n >> v1 >> v2;
  for (int i = 1; i <= n; i++) cin >> a[i];
  cin >> x0 >> y0;
  for (int i = 2; i <= n; i++) {
    k = sqrt((a[i] - x0) * (a[i] - x0) + y0 * y0) / v2 + a[i] / v1;
    if (k <= mn) {
      ans = i;
      mn = k;
    }
  }
  cout << ans << endl;
  return 0;
}
