#include <bits/stdc++.h>
using namespace std;
string src = "aeiou13579";
int main() {
  ios::sync_with_stdio(false);
  string s;
  cin >> s;
  int ans = 0;
  for (char ch : s) {
    auto it = src.find(ch);
    if (it != -1) ans++;
  }
  cout << ans << '\n';
  return 0;
}
