output_description: Print the cost of the Ferris wheel for Takahashi.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      A B
attempt: r, d, x = input().split()
  m = int(x)
  for i in range(1, 11):
      m = int(r) * int(m) - int(d)
      print(int(m))
  
problem_description: Statement
  
  Takahashi, who is A years old, is riding a Ferris wheel.
  
  It costs B yen (B is an even number) to ride the Ferris wheel if you are 13
  years old or older, but children between 6 and 12 years old (inclusive) can
  ride it for half the cost, and children who are 5 years old or younger are
  free of charge. (Yen is the currency of Japan.)
  
  Find the cost of the Ferris wheel for Takahashi.
samples: [{"input": "30 100", "output": "100\n    \n\nTakahashi is 30 years old now, and the cost of the Ferris wheel is 100 yen.\n\n* * *"}, {"input": "12 100", "output": "50\n    \n\nTakahashi is 12 years old, and the cost of the Ferris wheel is the half of 100\nyen, that is, 50 yen.\n\n* * *"}, {"input": "0 100", "output": "0\n    \n\nTakahashi is 0 years old, and he can ride the Ferris wheel for free."}]