#include <bits/stdc++.h>
using namespace std;
int m[] = {'a', 'e', 'i', 'o', 'u'};
bool fun(char x) {
  for (int i = 0; i < 5; i++)
    if (x == m[i]) return true;
  if ((x - '0') >= 0 && (x - '0') <= 9 && (x - '0') % 2 == 1) return true;
  return false;
}
int main() {
  string A;
  cin >> A;
  int ans = 0;
  int len = A.length();
  for (int i = 0; i < len; i++) {
    if (fun(A[i])) ans++;
  }
  cout << ans << endl;
  return 0;
}
