#include <bits/stdc++.h>
using namespace std;
const int MAX = 5e5 + 9;
const long long MOD = 1e9 + 7;
double val[MAX];
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  string s;
  cin >> s;
  int n = s.length();
  double cur = n / 2;
  for (int i = 1; i <= n / 2; i++) cur += (double)i / (n - i + 1);
  if (n % 2) cur++;
  double f = 0;
  if (n % 2) {
    int mid = n / 2 + 1;
    for (int i = 0; i < mid; i++) {
      val[mid - i] = val[mid + i] = cur;
      if (i == 0)
        f += (double)1 / mid;
      else
        f += (double)1 / (mid - i) + (double)1 / (mid + i);
      cur -= f;
    }
  } else {
    int mid = n / 2;
    for (int i = 0; i < mid; i++) {
      val[mid - i] = val[mid + i + 1] = cur;
      f += (double)1 / (mid - i) + (double)1 / (mid + i + 1);
      cur -= f;
    }
  }
  double res = 0;
  for (int i = 0; i < n; i++)
    if (s[i] == 'A' || s[i] == 'E' || s[i] == 'O' || s[i] == 'U' ||
        s[i] == 'I' || s[i] == 'Y')
      res += val[i + 1];
  cout << fixed << setprecision(10) << res << "\n";
}
