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

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

main() {}