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: A, B, C = map(int, input().split())
  AB_C = A * 10 + B + C
  A_BC = A + B * 10 + C
  A_CB = A + C * 10 + B
  B_AC = B + A * 10 + C
  B_CA = B + C * 10 + A
  C_BA = C + B * 10 + A
  max = 0
  S = []
  S.append(AB_C)
  S.append(A_BC)
  S.append(A_CB)
  S.append(B_AC)
  S.append(B_CA)
  S.append(C_BA)
  for i in range(len(S)):
      if S[i] > max:
          max = S[i]
  print(max)
  
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"}]