output_description: Print the maximum possible amount of the allowance.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      A B C
attempt: L = sorted(input().split(), reverse=True)
  print(int(L[0] + L[1]) + int(L[2]))
  
problem_description: Statement
  
  You have decided to give an allowance to your child depending on the outcome
  of the game that he will play now.
  
  The game is played as follows:
  
    * There are three "integer panels", each with a digit between 1 and 9 (inclusive) printed on it, and one "operator panel" with a `+` printed on it.
    * The player should construct a formula of the form X + Y, by arranging the four panels from left to right. (The operator panel should not be placed at either end of the formula.)
    * Then, the amount of the allowance will be equal to the resulting value of the formula.
  
  Given the values A, B and C printed on the integer panels used in the game,
  find the maximum possible amount of the allowance.
samples: [{"input": "1 5 2", "output": "53\n    \n\nThe amount of the allowance will be 53 when the panels are arranged as `52+1`,\nand this is the maximum possible amount.\n\n* * *"}, {"input": "9 9 9", "output": "108\n    \n\n* * *"}, {"input": "6 6 7", "output": "82"}]