abstract class Interface {
  int implementedConcreteField = 0;
  abstract int implementedAbstractField;
  int declaredConcreteImplementsConcreteField = 0;
  int declaredAbstractImplementsConcreteField = 0;
  abstract int declaredConcreteImplementsAbstractField;
  abstract int declaredAbstractImplementsAbstractField;
}

abstract class AbstractClass implements Interface {
  int declaredConcreteField = 0;
  abstract int declaredAbstractField;
  int declaredConcreteImplementsConcreteField = 0;
  abstract int declaredAbstractImplementsConcreteField;
  int declaredConcreteImplementsAbstractField = 0;
  abstract int declaredAbstractImplementsAbstractField;
}

main() {}