uva10106（大数乘法）

public class Product {
    public static void main(String[] args){
        Scanner sc = new Scanner(new BufferedInputStream(System.in));
        BigDecimal bd1, bd2, ans;
        while(sc.hasNext()){
            bd1 = new BigDecimal(sc.next());
            bd2 = new BigDecimal(sc.next());

            System.out.println(bd1.multiply(bd2));
        }

        sc.close();
    }
}

用java写就变成大水题了（-_-）