#include <bits/stdc++.h>
using namespace std;
const double pi = acos(-1.0);
string s;
void solve() {
  int n = s.size();
  int ans = n;
  for (int i = 0; i < n; i++) {
    char c = s[i];
    if ((('a' <= c && c <= 'z') && c != 'a' && c != 'e' && c != 'i' &&
         c != 'o' && c != 'u') ||
        (c - '0') % 2 == 0) {
      ans--;
    }
  }
  cout << ans << endl;
}
int main() {
  while (cin >> s) {
    solve();
  }
}
