Problem Statement 
 In a restaurant, if you were pleased by the waiter's service, you may leave him a tip  you pay him more than the actual value of the bill, and the waiter keeps the excess money. In some countries, not leaving a tip for the waiter is even considered impolite.
During my recent holiday I was having dinner in a foreign restaurant. The pamphlet from my travel agency informed me that the proper way of tipping the waiter is the following:
 The sum I pay must be round, i.e., divisible by 5.
 The tip must be between 5% and 10% of the final sum I pay, inclusive.
Clearly, sometimes there may be multiple "correct" ways of settling the bill. I'd like to know exactly how many choices I have in a given situation. I could program it easily, but I was having a holiday... and so it's you who has to solve this task.
You will be given:
 an int bill  the amount I have to pay for the dinner
 an int cash  the amount of money I have in my pocket
Write a function that computes how many different final sums satisfy the conditions above. 

Definition 
 Class:  TippingWaiters  Method:  possiblePayments  Parameters:  int, int  Returns:  int  Method signature:  int possiblePayments(int bill, int cash)  (be sure your method is public) 




Notes 
  Assume that both bill and cash are in dollars. 
  All the money I have is in onedollar banknotes. 

Constraints 
  bill and cash are between 1 and 2,000,000,000, inclusive. 
  bill doesn't exceed cash. 

Examples 
0)  
  Returns: 0  4 isn't a round sum, and 5 is too much. 


1)  
  Returns: 1  The only correct choice is to pay 25 dollars, thus leaving a tip of 2 dollars. 


2)  
  Returns: 0  The same bill, but I don't have enough money to leave an appropriate tip. 


3)  
  Returns: 1  This time, it is appropriate to pay either 235 or 240 dollars. Sadly, I don't have enough money for the second possibility. 


4)  
  Returns: 14440  A large bill, but with that much money I don't care. 


5)  
 
6)  
 