using System;

public class Program

{

    public static void Main()

    {

        String word=Console.ReadLine();

        char[] a={'a','e','i','o','u'};

        int count=0;

        for(int i=0;i<a.Length;i++){

            for(int j=0;j<word.Length;j++){

                if(a[i]==word(j))

                    count++;

            }

        }

        Console.WriteLine(count);

    }

}