using System;
using System.Linq;

namespace VowelsCount
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            char[] vowels = { 'a', 'o', 'u', 'e', 'i', 'A', 'O', 'U', 'E', 'I' };

            Console.WriteLine(CountVowels(input, vowels));
        }

        static int CountVowels(string input, char[] vowels)
        {
            int vowelsCount = 0;

            for (int i = 0; i < input.Length; i++)
            {
                if (vowels.Contains(input[i]))
                {
                    vowelsCount++;
                }
            }

            return vowelsCount;
        }
    }
}