Vowels Sum

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _09.Vowels_Sum
{
    class Program
    {
        static void Main(string[] args)
        {
            string duma = Console.ReadLine();
            var letterSum = 0;

            for (int i = 0; i < duma.Length; i++)
            {
                char letter = duma[i];


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

                }
                Console.WriteLine(letterSum);
            }



        }
    }
}