#include <bits/stdc++.h>
using namespace std;
void init() {}
const double EPS = 1e-9;
const int INF = (int)1e9 + 41;
const int N = (int)1e6 + 34;
void solve() {
  string q = "13579aeiou";
  string s;
  cin >> s;
  int ans = 0;
  for (int i = 0; i < s.length(); i++)
    if (q.find(s[i]) <= 20) ans++;
  cout << ans;
}
int main() {
  init();
  solve();
  return 0;
}
