using System;
using System.Linq;

namespace _02._Vowels_Count
{
    class Program
    {

        static void Main(string[] args)
        {

            VowelsCount();
        }

        static void VowelsCount()
        {
            string command = Console.ReadLine().ToLower();
            var letters = new string[] { "a", "e", "i", "o", "u" };
            int count = 0;

            for (int i = 0; i < command.Length; i++)
            {
                if (command.Contains(letters[i]))
                {
                   count++;

                }

            }
            Console.WriteLine(count);

        }
    }
}