#include <bits/stdc++.h>
using namespace std;
template <class T1>
void deb(T1 e) {
  cout << e << endl;
}
template <class T1, class T2>
void deb(T1 e1, T2 e2) {
  cout << e1 << " " << e2 << endl;
}
template <class T1, class T2, class T3>
void deb(T1 e1, T2 e2, T3 e3) {
  cout << e1 << " " << e2 << " " << e3 << endl;
}
template <class T1, class T2, class T3, class T4>
void deb(T1 e1, T2 e2, T3 e3, T4 e4) {
  cout << e1 << " " << e2 << " " << e3 << " " << e4 << endl;
}
template <class T1, class T2, class T3, class T4, class T5>
void deb(T1 e1, T2 e2, T3 e3, T4 e4, T5 e5) {
  cout << e1 << " " << e2 << " " << e3 << " " << e4 << " " << e5 << endl;
}
template <class T1, class T2, class T3, class T4, class T5, class T6>
void deb(T1 e1, T2 e2, T3 e3, T4 e4, T5 e5, T6 e6) {
  cout << e1 << " " << e2 << " " << e3 << " " << e4 << " " << e5 << " " << e6
       << endl;
}
string st;
long long cum1[500010], cum2[500010], cum3[500010], cumhelp3[500010];
bool okay(char ch) {
  return ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U' ||
         ch == 'Y';
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  ;
  int mini, i, j, n, baki1, baki2;
  cin >> st;
  for (i = 0; i < st.size(); i++) {
    if (!okay(st[i])) continue;
    baki1 = i;
    baki2 = st.size() - i - 1;
    mini = min(baki1, baki2);
    mini++;
    cum1[1]++;
    cum1[mini + 1]--;
    if (baki1 > baki2) swap(baki1, baki2);
    if (baki2 > baki1) {
      cum2[baki1 + 2] += mini;
      cum2[baki2 + 2] -= mini;
    }
    mini--;
    cumhelp3[st.size() - mini + 2]--;
    cum3[st.size() - mini + 1] += mini;
  }
  double ans = 0;
  for (i = 1; i <= st.size(); i++) {
    cum1[i] += cum1[i - 1];
    cum2[i] += cum2[i - 1];
    cumhelp3[i] += cumhelp3[i - 1];
    cum3[i] += cum3[i - 1] + cumhelp3[i];
  }
  for (i = 1; i <= st.size(); i++) {
    cum1[i] *= (long long)i;
    ans += (double)(cum1[i] + cum2[i] + cum3[i]) / (double)i;
  }
  cout << fixed << setprecision(12) << ans << endl;
  return 0;
}
