import java.util.Scanner;

class Car
{
  // instance variables
  double startMiles;   // Stating odometer reading
  double endMiles;     // Ending odometer reading
  double gallons;      // Gallons of gas used between the readings

  // constructor
  Car(  double first, double last, double gals  )
  {
    startMiles = first ;
    endMiles   = last ;
    gallons    = gals ;
  }

  // methods
  double calculateMPG()
  {
    return  (endMiles - startMiles)/gallons ;
  }

  boolean gasHog() {
    if (calculateMPG() < 15) {
        return true;
    } else {
        return false;
    }
 }
}

class MilesPerGallon
{
  public static void main( String[] args )
  {
    Car car = new Car( 32456, 32810, 10.6 );
    System.out.println( "Miles per gallon is " + car.calculateMPG() );
    if (car.gasHog() = true)
    System.out.println( "Gas hog!" ) ;
  }
}