#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 5;
const int M = 1e9 + 7;
int n;
double v, v2, a[N], b[N];
double x, y;
int id = 1;
int main() {
  ios_base ::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  cin >> n >> v >> v2;
  for (int i = 0; i < n; ++i) {
    cin >> b[i];
    a[i] = 1.0 * b[i] / v;
  }
  cin >> x >> y;
  for (int i = 1; i < n; ++i) {
    a[i] = a[i] + sqrt((b[i] - x) * (b[i] - x) + y * y) / v2;
    if (a[i] <= a[id]) {
      id = i;
    }
  }
  cout << id + 1 << "\n";
  return 0;
}
