#include <bits/stdc++.h>
using namespace std;
bool isVowel(char ch) {
  return ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u';
}
int main() {
  string str;
  cin >> str;
  int ans = 0;
  for (auto it : str) {
    if (isdigit(it) && (it - '0') % 2 == 1) ++ans;
    if (isVowel(it)) ++ans;
  }
  cout << ans << '\n';
  return 0;
}
