#include <bits/stdc++.h>
using namespace std;
void fast_in_out() {
  std::ios_base::sync_with_stdio(NULL);
  cin.tie(NULL);
  cout.tie(NULL);
}
int main() {
  fast_in_out();
  string s;
  cin >> s;
  long long c = 0;
  for (int i = 0; i < s.size(); i++) {
    if (s[i] <= '9' && (s[i] - '0') % 2) c++;
    if (s[i] == 'a' || s[i] == 'e' || s[i] == 'o' || s[i] == 'i' || s[i] == 'u')
      c++;
  }
  cout << c << endl;
  return 0;
}
