#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, i;
  float v1, v2;
  float a[109];
  float v[109];
  cin >> n >> v1 >> v2;
  for (i = 1; i <= n; i++) cin >> a[i];
  int end[2];
  cin >> end[0] >> end[1];
  for (i = 2; i <= n; i++) {
    v[i] = a[i] / v1 +
           sqrt((end[0] - a[i]) * (end[0] - a[i]) + end[1] * end[1]) / v2;
  }
  float min = v[2];
  int no = 2;
  for (i = 3; i <= n; i++) {
    if (min >= v[i]) {
      min = v[i];
      no = i;
    }
  }
  cout << no << endl;
  return 0;
}
