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.
a,b = map(int,input().split())
c = b/a
ans = 1
while c > 2:
    print(c)
    c = c/2
    ans = ans+1
print(ans)
a,b = map(int,input().split())
ans = 0
while(1):
    if a <= b:
        ans = ans+1
        a = a*2
    else:
        break
print(ans)