using System;

namespace HomeWorks
{
    class Program
    {
        static void Main(string[] args)
        {
            string text = Console.ReadLine(); // hello
            int countVowels = 0;
            char[] vowelsChars = { 'a', 'e', 'o', 'y' };

            for (int i = 0; i < text.Length; i++)
            {
                for (int j = 0; j < vowelsChars.Length; j++)
                {
                    if (text[i] == vowelsChars[j])
                    {
                        countVowels++; // + 1
                    }
                }
            }

            Console.WriteLine(countVowels);
        }
    }
}