#include <bits/stdc++.h>
using namespace std;
const long long MAXN = +100005;
const long long INF = 1e18;
const long long MOD = 1e9 + 7;
long long bin_pow(long long base, long long p) {
  if (p == 1) {
    return base;
  }
  if (p % 2 == 0) {
    long long t = bin_pow(base, p / 2);
    return t * t % MOD;
  } else {
    return bin_pow(base, p - 1) * base % MOD;
  }
}
long long inverse_element(long long x) { return bin_pow(x, MOD - 2); }
long long divide(long long a, long long b) {
  return a * inverse_element(b) % MOD;
}
int main() {
  string second;
  cin >> second;
  long long cnt = 0;
  for (int i = 0; i < second.size(); i++) {
    if (second[i] == 'a' || second[i] == 'e' || second[i] == 'i' ||
        second[i] == 'o' || second[i] == 'u')
      cnt++;
    if (second[i] >= '0' && second[i] <= '9' && (second[i] - '0') % 2 == 1)
      cnt++;
  }
  cout << cnt;
}
