class WrongAllocate {
    public static void main(String[] z) {
        A a ;
        B b ;
        a = new B() ;
        b = new A() ;
        System.out.println(12) ;
    }
}

class A {

    public int get_tt() {
        return 32 ;
    }

}

class B extends A {

    int useless ;

}