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: from statistics import mean, median, variance, stdev
  import numpy as np
  import sys
  import math
  import fractions
  import itertools
  import copy
  
  
  # 以下てんぷら
  def j(q):
      if q == 1:
          print("Yes")
      elif q == 0:
          print("No")
      exit(0)
  
  
  """
  def ct(x,y):
      if (x>y):print("+")
      elif (x<y): print("-")
      else: print("?")
  """
  
  
  def ip():
      return int(input())
  
  
  def printrow(a):
      for i in range(len(a)):
          print(a[i])
  
  
  def combinations(n, r):
      if n < r:
          return 0
      return math.factorial(n) // (math.factorial(n - r) * math.factorial(r))
  
  
  def permutations(n, r):
      if n < r:
          return 0
      return math.factorial(n) // math.factorial(n - r)
  
  
  def lcm(x, y):
      return (x * y) // fractions.gcd(x, y)
  
  
  # n = ip()                                     #入力整数1つ
  n, k = (int(i) for i in input().split())  # 入力整数横2つ以上
  # a = [int(i) for i in input().split()]        #入力整数配列
  # a = input()                                  #入力文字列
  # a = input().split()                          #入力文字配列
  # n = ip()                      #入力セット(整数改行あり)(1/2)
  # a=[ip() for i in range(n)]    #入力セット(整数改行あり)(2/2)
  # a=[input() for i in range(n)]    #入力セット(整数改行あり)(2/2)
  # jの変数はしようできないので注意
  # 全足しにsum変数使用はsum関数使用できないので注意
  s = 0
  while n <= k:
      s += 1
      n *= 2
  print(s)
  
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"}]