#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int count = 0;
  for (int i = 0; i < s.size(); i++) {
    if (isalpha(s[i])) {
      if (s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' ||
          s[i] == 'u')
        count++;
    } else if (isdigit(s[i])) {
      if ((s[i] - '0') % 2 != 0) count++;
    }
  }
  cout << count;
  return 0;
}
