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Given the following text description, write Python code to implement the functionality described.
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Description:
Master Theorem For Subtract and Conquer Recurrences
''Python3 code for the above approach ; ''Driver code

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Python Code:
def fib(n ) : 
	 if(n <= 1 ) : 
	 return n 
  return fib(n - 1 ) + fib(n - 2 ) 
  n = 9 
 print(fib(n ) ) 

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