Problem Statement  
Given a int[] x and a percentile p (between 0 and 100, inclusive), find the smallest element y in x such that at least p percent of the elements in x are less than or equal to y.  
Definition  
 
Constraints  
  x will contain between 1 and 50 elements, inclusive.  
  Each element of x will be between 1000000 and 1000000, inclusive.  
  p will be between 0 and 100, inclusive.  
Examples  
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