abstract class Customer {
  private int price;
  public void setPrice(int price) {
    this.price = price;
  }
  public int getPrice() {
    return price;
  }
}
 
class RegularCustomer extends Customer {
  public RegularCustomer() {
    setPrice(100);
  }
}
class HandicappedCustomer extends Customer {
  public HandicappedCustomer() {
    setPrice(0);
  }
}
 
public class Main {
  public static void main (String[] args) {
    Customer a = new HandicappedCustomer(); 
    Customer b = new RegularCustomer();
    System.out.println(a.getPrice());
    System.out.println(b.getPrice());  
  }
}
 

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