using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        string inputText = Console.ReadLine().ToLower();

        char[] vowels = { 'а', 'о', 'у', 'э', 'ы', 'ю', 'я', 'е', 'ё', 'и' };

​

        int count = 0;

        for(int charIndex = 0; charIndex < inputText.Length; charIndex++)

        {

            for(int charVowel = 0; charVowel < vowels.Length; charVowel++) 

            {

                if(inputText[charIndex] == vowels[charVowel])

                    count += 1;

            }

        }

​

        Console.WriteLine(count);

    }

}