#include <bits/stdc++.h>
using namespace std;
long long i, k;
string s;
char q;
int main() {
  getline(cin, s);
  for (i = 0; i < s.size(); i++) {
    if (s[i] == 'a' || s[i] == 'e' || s[i] == 'u' || s[i] == 'o' ||
        s[i] == 'i' || (isdigit(s[i]) && (s[i] - 48) % 2 != 0))
      k++, q = s[i];
  }
  cout << k;
}
