#include <bits/stdc++.h>
using namespace std;
int main() {
  char s[100];
  cin >> s;
  int l = strlen(s), i, count = 0, c = 0;
  for (i = 0; i < l; i++) {
    if (s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' ||
        s[i] == 'u') {
      count++;
    } else if (s[i] >= '0' && s[i] <= '9') {
      int x = int(s[i]);
      if (x % 2 != 0) {
        c++;
      }
      x = 0;
    }
  }
  cout << (count + c) << endl;
  return 0;
}
