title: Calculate Maximum Value Using Sign Two Numbers String
signature: function calculate_maximum_value_using_sign_two_numbers_string(str)
test_code: using Printf
  
  # SOLUTION CODE
  # ============================================
  PLACEHOLDER_CODE_BODY
  
  # TESTING CODE 
  # ============================================
  function validate_solution(actual, expected)
      return actual == expected
  end
  
  function driver(str, expected)
      try
  
          if validate_solution(PLACEHOLDER_FN_NAME(str), expected)
              return "PASSED";
          end
          return "FAILED";
      catch exception_obj
          return string(Base.typename(typeof(exception_obj)).wrapper);
      end
  end
  
  function main()
      
      result = driver("pR", 2176);
      @printf("TEST-0...%s\n",result);
      
      result = driver("9518", 368);
      @printf("TEST-1...%s\n",result);
      
      result = driver("1", 1);
      @printf("TEST-2...%s\n",result);
      
      result = driver("3170487", 6272);
      @printf("TEST-3...%s\n",result);
      
      result = driver("0100101010", 4);
      @printf("TEST-4...%s\n",result);
      
      result = driver("Z rONcUqWb", -303);
      @printf("TEST-5...%s\n",result);
      
      result = driver("00419297", 5670);
      @printf("TEST-6...%s\n",result);
      
      result = driver("00", 0);
      @printf("TEST-7...%s\n",result);
      
      result = driver("r", 66);
      @printf("TEST-8...%s\n",result);
      
  end
  
  main()
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;
  }