import java.util.Scanner;

/**
   Reads a string and counts all vowels contained in that string.
   Vowels are A E I O U a e i o u.

   Input: the value of s, a string
   Output: the number of all the vowels in s
*/
public class CountVowels
{
   public static void main(String[] args)
   {
      Scanner in = new Scanner(System.in);
      String s = in.nextLine();

      int count = 0;
      String vowels = "aeiouAEIOU";
      for(int i = 0; i < s.length(); i++)
      {
         if(vowels.indexOf(s.charAt(i)) != -1){count++;}
      }



      System.out.println(count);
   }
}