#include <bits/stdc++.h>
using namespace std;
int main() {
  int i, j, sum;
  char s[50 + 5];
  while (~scanf("%s", s)) {
    sum = 0;
    int len = strlen(s);
    for (i = 0; i < len; i++) {
      if (s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' ||
          s[i] == 'u')
        sum++;
      if (s[i] >= 48 && s[i] <= 57)
        if ((s[i] - '0') % 2 != 0) sum++;
    }
    printf("%d\n", sum);
  }
  return 0;
}
