#include <bits/stdc++.h>
using namespace std;
int main() {
  string a;
  while (cin >> a) {
    int ans = 0;
    for (int i = 0; a[i]; i++) {
      if (a[i] == 'a' || a[i] == 'e' || a[i] == 'i' || a[i] == 'o' ||
          a[i] == 'u')
        ans++;
      if (a[i] >= '0' && a[i] <= '9') {
        int x = a[i] - '0';
        if (x % 2) ans++;
      }
    }
    cout << ans << endl;
  }
}
