using System;

namespace vowelsCount
{
    class Program
    {
        static void Main(string[] args)
        {
            string word = Console.ReadLine().ToLower();
            Console.WriteLine(GetCountOfVowels(word));
        }

        static int GetCountOfVowels(string word)
        {
            int count = 0;
            for (int i = 0; i < word.Length; i++)
            {
                if(word[i] == 'a' || word[i] == 'e' || word[i] == 'i' || word[i] == 'o' || word[i] == 'u')
                {
                    count++;
                }
            }
            return count;
        }
    }
}