/** Headquarters (parent company) for the all of the stores */
public class Headquarters { 
  /** The stores owned by the parent company */
  private Store stores[];
  /** The daily sales for all stores */
  private int dailySales [] [];
  /** The daily purchases (expenses) for all stores */
  private int dailyPurchases [] [];
  /** Table containing the days of the week constant literals */
  public static final String DAYS_OF_WEEK [] 
    = {"Monday", "Tuesday", "Wednesday", "Thurs", "Fri", "Sat", "Sun"};
  /** Create a headquarters using an array of Stores.  
   *  Create the arrays for daily sales and purchases. 
   */
  public Headquarters(Store s []) {
    stores = s;
    dailySales = new int [s.length] [7];
    dailyPurchases = new int [s.length] [7];
  
  }
  /** Set the sale amount for Store name, on daynumber day 
   *  to the value amount.
   * If either the name or daynumber is invalid, display
   * an error message.
   */
 

  /** Get the sale amount for Store name, on daynumber day. 
   *  Return the value as an int.  
   * If either the name or daynumber is invalid, display
   * an error message and return -1
   */
  
  /** Set the purchase amount for Store name, on daynumber day 
   *  to the value amount.
   * If either the name or daynumber is invalid, display
   * an error message.
   */
 

  /** Get the purchase amount for Store name, on daynumber day. 
   *  Return the value as an int.  
   * If either the name or daynumber is invalid, display
   * an error message and return -1
   */
 
  
  /** 
   * print the store activity for store sNum for the week.
   * First print the store name and manager,
   * Then, for each day of the week:
   *   print the day of the week, the sale amount and the purchase amount
   * Finally Print a total for the week.
   */
 
}