#include <bits/stdc++.h>
using namespace std;
int read() {
  int v = 0, f = 1;
  char c = getchar();
  while (c < 48 || 57 < c) {
    if (c == '-') f = -1;
    c = getchar();
  }
  while (48 <= c && c <= 57) v = (v << 3) + v + v + c - 48, c = getchar();
  return v * f;
}
long long readll() {
  long long v = 0, f = 1;
  char c = getchar();
  while (c < 48 || 57 < c) {
    if (c == '-') f = -1;
    c = getchar();
  }
  while (48 <= c && c <= 57) v = (v << 3) + v + v + c - 48, c = getchar();
  return v * f;
}
char s[55];
int n;
void predo() {}
void init() {
  scanf("%s", s + 1);
  n = strlen(s + 1);
}
void solve() {
  int ans = 0;
  for (int i = (int)1; i <= (int)n; i++) {
    if (s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' || s[i] == 'u')
      ans++;
    if (s[i] >= '0' && s[i] <= '9' && ((s[i] - '0') % 2) == 1) ans++;
  }
  printf("%d\n", ans);
}
int main() {
  predo();
  int cas = 1;
  while (cas--) {
    init();
    solve();
  }
  return 0;
}
