vowel sum

using System;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.Design;
using System.Globalization;
using System.Net.Http.Headers;
using System.Reflection;
using System.Runtime.ConstrainedExecution;
using System.Security.Cryptography;
using Microsoft.VisualBasic.CompilerServices;

namespace SomeExcercises
{
    class Program
    {
        static void Main(string[] args)
        {
            string text = Console.ReadLine();
            int sum = 0;

            for (int i = 0; i < text.Length; i++)
            {
                if (text[i] == 'a')
                {
                    sum += 1;
                }
                else if (text[i] == 'e')
                {
                    sum += 2;
                }
                else if (text[i] == 'i')
                {
                    sum += 3;
                }
                else if (text[i] == 'o')
                {
                    sum += 4;
                }
                else if (text[i] == 'u')
                {
                    sum += 5;
                }
            }

            Console.WriteLine(sum);
        }
    }
}