import tester.* ;

interface IAnimal {
  boolean isNormalSize () ;
}

abstract class AbsAnimal implements IAnimal {
  int length ;
  
  AbsAnimal (int length) {
    this.length = length ;
  }  

  // determines whether this.length lies between given bounds
  boolean isLenWithin(int low, int high) {
    return low <= this.length && this.length <= high ;
  }
}

class Dillo extends AbsAnimal {
  boolean isDead ;
  
  Dillo (int length, boolean isDead) {
    super(length) ;
    this.isDead = isDead ;
  }
  
  // produces a dead Dillo one unit longer than this one
  Dillo hitWithTruck () {
    return new Dillo(this.length + 1 , true) ;
  }
  
  // determines whether this dillo's length is between 2 and 3
  public boolean isNormalSize () {
    return isLenWithin(2,3);
  }
}

class Boa extends AbsAnimal {
  String name ;
  String eats ;
   
  Boa (String name, int length, String eats) {
    super(length) ;
    this.name = name ;
    this.eats = eats ;
  }
  
  // determines whether this boa's length is between 5 and 10
  public boolean isNormalSize () {
    return isLenWithin(5,10);
  }
}