06. Vowels Sum

using System;

namespace VowelsSum
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            int sum = 0;
            for (int i = 0; i < input.Length; i++)
            {
                char letter = input[i];

                {
                switch (letter)
                    {
                        case 'a':
                            sum += 1;
                            break;
                        case 'e':
                            sum += 2;
                            break;
                        case 'i':
                            sum += 3;
                            break;
                        case 'o':
                            sum += 4;
                            break;
                        case 'u':
                            sum += 5;
                            break;
                    }

                }
            }
            Console.WriteLine(sum);
        }
    }
}