#include <bits/stdc++.h>
using namespace std;
double a[200] = {0};
double b[200] = {0};
int main() {
  double n, m, t;
  cin >> n >> m >> t;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  double x, y;
  cin >> x >> y;
  for (int i = 1; i < n; i++) {
    b[i] = a[i] / m;
    b[i] += sqrt((x - a[i]) * (x - a[i]) + y * y) / t;
  }
  int ans = 1;
  for (int i = 1; i < n; i++) {
    if (b[i] < b[ans]) {
      ans = i;
    } else if (b[i] == b[ans]) {
      double k1 = sqrt((x - a[i]) * (x - a[i]) + y * y);
      double k2 = sqrt((x - a[ans]) * (x - a[ans]) + y * y);
      if (k1 < k2) {
        ans = i;
      }
    }
  }
  cout << ans + 1 << endl;
  return 0;
}
