#include <bits/stdc++.h>
int main() {
  char s[100];
  while (~scanf("%s", s)) {
    int ans = 0;
    for (char *ch = s; *ch; ++ch) {
      if (isdigit(*ch)) {
        if (((*ch) - '0') & 1) ++ans;
      } else {
        if (strchr("aeiou", *ch)) ++ans;
      }
    }
    printf("%d\n", ans);
  }
  return 0;
}
