#include <bits/stdc++.h>
using namespace std;
char yuan[] = {'a', 'e', 'i', 'o', 'u'};
int main() {
  string str;
  while (cin >> str) {
    int len = str.length();
    int ans = 0;
    for (int i = 0; i < len; i++) {
      for (int j = 0; j < 5; j++) {
        if (str[i] == yuan[j]) ans++;
      }
      if (isdigit(str[i])) {
        if ((str[i] - '0') % 2) ans++;
      }
    }
    cout << ans << endl;
  }
}
