/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author LH
 */
public class ZahlSumme
{
    public static void main(String[] args) throws Exception
    {
        int sum = 0;
        String zw = InteractiveIO.promptAndRead("Zahlwort bitte");
        while(!zw.equals("ende"))
        {
            sum+=zahlwortzuzahl(zw);
            zw = InteractiveIO.promptAndRead("Zahlwort bitte");
        }
        InteractiveIO.write(sum+"");
    }
    
    
    public static int zahlwortzuzahl(String zahl)
    {
        int r = 0;
            switch(zahl)
            {
                case "eins":
                    r = 1;
                    break;
                case "zwei":
                    r = 2;
                    break;
                case "drei":
                    r = 3;
                    break;
                case "vier":
                    r = 4;
                    break;
                case "fünf":
                    r = 5;
                    break;
                case "sechs":
                    r = 6;
                    break;
                case "sieben":
                    r = 7;
                    break;
                case "acht":
                    r = 8;
                    break;
                case "eun":
                    r = 9;
                    break;
                case "zehn":
                    r = 10;
                    break;
                case "elf":
                    r = 11;
                    break;
                case "dutzend":
                    r = 12;
                    break;
                case "zwölf":
                    r = 12;
                    break;
                case "dreizehn":
                    r = 13;
                    break;
                default:
                    r=0;
            }
        return r;
    }
            
            
            
            
}