even power of two

import java.util.Scanner;

public class Even_Powers_of_2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String text = scanner.nextLine();
        int sum = 0;
        for (int index = 0; index < text.length() ; index++) {
            char currentLetter = text.charAt(index);
            switch (currentLetter) {
                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;
                default:
                    sum += 0;
            }
        }
        System.out.println(sum);
    }
}