output_description: Print the maximum possible length of the sequence.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      X Y
attempt: import math
  x, y =map(int, input().split())
  print(int(math.log2(y / x) + 1 )
problem_description: Statement
  
  As a token of his gratitude, Takahashi has decided to give his mother an
  integer sequence. The sequence A needs to satisfy the conditions below:
  
    * A consists of integers between X and Y (inclusive).
    * For each 1\leq i \leq |A|-1, A_{i+1} is a multiple of A_i and strictly greater than A_i.
  
  Find the maximum possible length of the sequence.
samples: [{"input": "3 20", "output": "3\n    \n\nThe sequence 3,6,18 satisfies the conditions.\n\n* * *"}, {"input": "25 100", "output": "3\n    \n\n* * *"}, {"input": "314159265 358979323846264338", "output": "31"}]