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