#include <bits/stdc++.h>
using namespace std;
inline void rd(long long& x) {
  static char ch;
  while (!isdigit(ch = getchar()))
    ;
  for (x = 0; isdigit(ch); ch = getchar()) x = x * 10 + ch - '0';
}
inline void rd(int& x) {
  static long long T_T;
  rd(T_T);
  x = T_T;
}
int main() {
  char ch;
  int ans = 0;
  while ((ch = getchar()) != '\n') {
    if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' ||
        ((ch - '0') & 1 && isdigit(ch)))
      ++ans;
  }
  printf("%d\n", ans);
}
