#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int cnt = 0;
  string vow = "aeiou";
  for (int i = 0; i < (int)s.size(); i++) {
    if ((int)s[i] < 97 && (((int)s[i] - 48) % 2 != 0))
      cnt++;
    else
      for (int j = 0; j < 5; j++)
        if (vow[j] == s[i]) cnt++;
  }
  cout << cnt;
  return 0;
}
