#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) {
  char c;
  int vowels = 0;
  while ((c=getchar()) != '\n') {
    if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u' || 
        c == 'A' || c == 'E' || c == 'I' || c == 'O' || c == 'U') {
      vowels++;
    }
  }

  printf("%d\n", vowels);
  return 0;
}