#include <bits/stdc++.h>
using namespace std;
bool isVowel(char ch) {
  return ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u';
}
int main() {
  int res;
  string s;
  while (cin >> s) {
    res = 0;
    for (int i = 0; i < s.size(); i++) {
      if (isVowel(s[i]))
        res++;
      else if (s[i] == '1' || s[i] == '3' || s[i] == '5' || s[i] == '7' ||
               s[i] == '9')
        res++;
    }
    cout << res << endl;
  }
  return 0;
}
