abstract class Product {
  //To return the price of this product
  abstract double price();
  //To return the weight of this product
  abstract double weight();
  //To return the price per ounce of this product
  abstract double pricePerOunce();
}

class Carrot extends Product {
  double myWeight;

  Carrot( double myWeight ) {
    this.myWeight = myWeight;
  }

  //To return the price of this Carrot
  //new Carrot(3).price() -> 3.5
  double price() {
    // ... this.myWeight ...
    return 3.5;
  }

  //To return the weight of this Carrot
  //new Carrot(3).weight() -> 3
  double weight() {
    // ... this.myWeight ...
    return this.myWeight;
  }

  //new Carrot(3).pricePerOunce() -> 1.66666....
  //To return the price per ounce of this Carrot
  double pricePerOunce() {
    // ... this.myWeight ...
    return this.price() / this.weight();
  }
}

class Aspirin extends Product {
  int numPills;
  Aspirin( int num ) {
   this.numPills = num;
  }

  //To return the price of this Aspirin
  //new Aspirin(100).price() -> 5.95
  double price() {
    // ... this.numPills ...
    return 5.95;
  }

  //To return the weight of this Aspirin
  //new Asprirn(100).weight() -> 5
  double weight() {
    // ... this.numPills ...
    return this.numPills * .05;
  }
  
  double pricePerOunce() {
    // ... this.myWeight ...
    return this.price() / this.weight();
  }
}