#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int n, vb, vs, xu, yu, n1;
  long long int a[100];
  int i;
  cin >> n >> vb >> vs;
  for (i = 0; i < n; i++) cin >> a[i];
  cin >> xu >> yu;
  double m = 1000000000000000.0;
  for (i = 1; i < n; i++) {
    double d = (double)a[i] / (double)vb +
               sqrt((xu - a[i]) * (xu - a[i]) + yu * yu) / (double)vs;
    if (d - m < +1e-10) {
      n1 = i + 1;
      m = d;
    }
  }
  cout << n1;
}
