interface Vessel{}
interface Toy {}
class Boat implements Vessel {}
class Speedboat extends Boat implements Toy {}
class Tree {
public static void main(String[] args) {
String s = "0";
Boat b = new Boat();
Boat b2 = new Speedboat();
Speedboat s2 = new Speedboat();
if( (b instanceof Vessel) && (b2 instanceof Toy)){
s += "1";
}
if( (s2 instanceof Vessel) && (s2 instanceof Toy)){
s += "2";
}
System.out.println(s);
}
}
