#include <bits/stdc++.h>
using namespace std;
char s[100];
int main() {
  scanf("%s", s);
  int ans = 0;
  for (int i = 0; s[i]; i++) {
    if (isalpha(s[i])) {
      if (s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' ||
          s[i] == 'u')
        ans++;
    } else if ((s[i] - '0') % 2)
      ans++;
  }
  printf("%d\n", ans);
  return 0;
}
