class MinBeholder {

    int verdi;

    public MinBeholder(int startVerdi){
        verdi = startVerdi;
    }

    public void leggPaa(int tall){
        int nyVerdi = verdi;
        nyVerdi = nyVerdi + tall;
        try {
            Thread.sleep(1);
        }
        catch(Exception e){}
        verdi = nyVerdi;
    }

    public void trekkFra(int tall){
        int nyVerdi = verdi;
        nyVerdi = nyVerdi - tall;

        try {
            Thread.sleep(1);
        }
        catch(Exception e){}
        verdi = nyVerdi;
    }

    public int hentVerdi(){
        return verdi;
    }
}