title: Calculate Maximum Value Using Sign Two Numbers String
signature: calculateMaximumValueUsingSignTwoNumbersString :: String -> Integer
  calculateMaximumValueUsingSignTwoNumbersString str = 
test_code: import Text.Printf
  import Control.Exception (catch, SomeException)
  import Data.Typeable
  import qualified Data.List as List
  import qualified Data.Map as Map
  import qualified Data.Set as Set
  
  -- SOLUTION CODE
  -- ============================================
  
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  validateSolution :: Integer -> Integer -> Bool
  validateSolution actual expected = do
      actual == expected
  
  
  driver :: String -> Integer -> String
  driver str expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME str) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver ("pR") (2176) )
  
      printf "TEST-1...%s\n" (driver ("9518") (368) )
  
      printf "TEST-2...%s\n" (driver ("1") (1) )
  
      printf "TEST-3...%s\n" (driver ("3170487") (6272) )
  
      printf "TEST-4...%s\n" (driver ("0100101010") (4) )
  
      printf "TEST-5...%s\n" (driver ("Z rONcUqWb") (-303) )
  
      printf "TEST-6...%s\n" (driver ("00419297") (5670) )
  
      printf "TEST-7...%s\n" (driver ("00") (0) )
  
      printf "TEST-8...%s\n" (driver ("r") (66) )
  
source_py: def calculate_maximum_value_using_sign_two_numbers_string(str):
      res = (ord(str[0]) - 48)
      for i in range(1, len(str)):
          if ((str[i] == '0') or (str[i] == '1') or (res < 2)):
              res += (ord(str[i]) - 48)
          else:
              res *= (ord(str[i]) - 48)
      return res
source_cpp: int calculate_maximum_value_using_sign_two_numbers_string(string str) {
    int res = str [ 0 ] - '0';
    for ( int i = 1;
    i < str . length ( );
    i ++ ) {
      if ( str [ i ] == '0' || str [ i ] == '1' || res < 2 ) res += ( str [ i ] - '0' );
      else res *= ( str [ i ] - '0' );
    }
    return res;
  }