Scramble String

Given a string A, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively.

Below is one possible representation of A = “great”:

    great
   /    \
  gr    eat
 / \    /  \
g   r  e   at
           / \
          a   t
 

To scramble the string, we may choose any non-leaf node and swap its two children.

For example, if we choose the node “gr” and swap its two children, it produces a scrambled string “rgeat”.

    rgeat
   /    \
  rg    eat
 / \    /  \
r   g  e   at
           / \
          a   t

We say that “rgeat” is a scrambled string of “great”.

Similarly, if we continue to swap the children of nodes “eat” and “at”, it produces a scrambled string “rgtae”.

    rgtae
   /    \
  rg    tae
 / \    /  \
r   g  ta  e
       / \
      t   a

We say that “rgtae” is a scrambled string of “great”.

Given two strings A and B of the same length, determine if B is a scrambled string of S.

Input Format:

The first argument of input contains a string A.
The second argument of input contains a string B.

Output Format:

Return an integer, 0 or 1:
    => 0 : False
    => 1 : True

Constraints:

1 <= len(A), len(B) <= 50

Examples:

Input 1:
    A = "we"
    B = "we"

Output 1:
    1

Input 2:
    A = "phqtrnilf"
    B = "ilthnqrpf"
    
Output 2:
    0

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