#include <bits/stdc++.h>
using namespace std;
int main() {
  long long n;
  double vb, vs;
  scanf("%lld %lf %lf", &n, &vb, &vs);
  double pos[n + 1];
  for (int i = 0; i < n; i++) {
    scanf("%lf", &pos[i]);
  }
  double a, b;
  scanf("%lf %lf", &a, &b);
  double t = 1000000000, ans = 1;
  for (int i = 1; i < n; i++) {
    double re = (pos[i] / vb + sqrt((a - pos[i]) * (a - pos[i]) + b * b) / vs);
    if (re <= t) {
      t = re;
      ans = i;
    }
  }
  cout << ans + 1 << endl;
}
