#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long t = 1;
  while (t--) {
    long long n;
    cin >> n;
    long long vu, vs;
    cin >> vu >> vs;
    long long x[n];
    for (long long i = 0; i < n; i++) cin >> x[i];
    long long xu, yu;
    cin >> xu >> yu;
    long long ans = 1000000007;
    double reachtime = 1000000007 * 1.000000000;
    long long leastx = 1000000007;
    for (long long i = 1; i < n; i++) {
      double mediocartime =
          (abs(x[i]) * 1.0000000000) / vu +
          ((double)sqrt((x[i] - xu) * (x[i] - xu) + (yu * yu)) /
           (vs * 1.000000000));
      if (mediocartime <= reachtime) {
        if (reachtime == mediocartime && leastx > abs(x[i] - xu)) {
          leastx = abs(x[i] - xu);
          ans = i + 1;
        } else {
          leastx = abs(x[i] - xu);
          ans = i + 1;
          reachtime = mediocartime;
        }
      }
    }
    cout << ans;
  }
  return 0;
}
