#include <bits/stdc++.h>
using namespace std;
int main() {
  char s[123];
  cin >> s;
  int ans = 0;
  for (int i = int(0); i < int(strlen(s)); i++) {
    if (s[i] >= '0' && s[i] <= '9' && ((s[i] - '0') % 2 != 0)) ans++;
    if (s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' || s[i] == 'u')
      ans++;
  }
  cout << ans << "\n";
  return 0;
}
