#include <bits/stdc++.h>
using namespace std;
const int N = 100;
const int CMP[5] = {'a', 'e', 'i', 'o', 'u'};
string s;
int ans;
int main() {
  cin >> s;
  for (int i = 0; i <= s.length() - 1; i++) {
    bool ok = false;
    if ('a' <= s[i] && s[i] <= 'z')
      for (int j = 0; j <= 4; j++)
        if (s[i] == CMP[j]) {
          ok = true;
          break;
        }
    if ('0' <= s[i] && s[i] <= '9')
      if ((s[i] - '0') % 2 == 1) ok = true;
    ans += ok;
  }
  cout << ans;
}
