text: # Copyright (c) 2019-present, Facebook, Inc.
  # All rights reserved.
  #
  # This source code is licensed under the license found in the
  # LICENSE file in the root directory of this source tree.
  #
  def f_gold ( a , b , k ) :
      c1 = ( b - a ) - 1
      c2 = ( k - b ) + ( a - 1 )
      if ( c1 == c2 ) :
          return 0
      return min ( c1 , c2 )
  
  
  #TOFILL
  
  if __name__ == '__main__':
      param = [
      (83,98,86,),
      (3,39,87,),
      (11,96,30,),
      (50,67,48,),
      (40,16,32,),
      (62,86,76,),
      (40,78,71,),
      (66,11,74,),
      (6,9,19,),
      (25,5,5,)
          ]
      n_success = 0
      for i, parameters_set in enumerate(param):
          if f_filled(*parameters_set) == f_gold(*parameters_set):
              n_success+=1
      print("#Results: %i, %i" % (n_success, len(param)))