#include <bits/stdc++.h>
using namespace std;
const int N = 2e5 + 7;
long long int a[N], pre[N], suf[N];
int main() {
  ios_base ::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  double n, mini = 1e6, cnt = 0, ans = 1e6, lent = 0, b, bb, flag = 0,
            curr_max = 0, x, y, va, vb;
  cin >> n >> va >> vb;
  for (long long int i = 1; i <= n; i++) cin >> a[i];
  cin >> x >> y;
  for (int i = 2; i <= n; i++) {
    double tt = sqrt((a[i] - x) * (a[i] - x) + y * y) / vb + a[i] / va;
    if (tt <= mini) mini = tt, bb = i;
  }
  cout << bb;
  return 0;
}
