The problem statment says
4. The list must not be sorted
However, the validator thinks different
Your submission failed for the following input:
A : [ 12, 13 ]
Your function returned the following :
 [12 13 ] [12 ] [13 ]
The expected returned value :
 [12 ] [12 13 ] [13 ]
- Also, the subsets should be sorted in ascending ( lexicographic ) order.
In theory sets have no order.