title: Calculate Maximum Value Using Sign Two Numbers String
signature: def calculateMaximumValueUsingSignTwoNumbersString(str: String) = {
test_code: import scala.collection.mutable.HashMap
  import scala.collection.immutable.HashSet
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  
  // TESTING CODE 
  // ============================================
  def validateSolution(actual: Int , expected: Int): Boolean = {
      actual.toString == expected.toString
  }
  
  def driver(str: String, expected: Int): String = {
      try {
          if (validateSolution(PLACEHOLDER_FN_NAME(str),expected)) {
              "PASSED"
          } else{
              "FAILED"
          }
      }catch{
          case e: Exception => {e.getClass.getName}
      }
  
  }
  object QuestionEvaluator extends App {
  
      println(s"TEST-0...${driver(
        "pR", 
        2176    
      )}")   
  
  
      println(s"TEST-1...${driver(
        "9518", 
        368    
      )}")   
  
  
      println(s"TEST-2...${driver(
        "1", 
        1    
      )}")   
  
  
      println(s"TEST-3...${driver(
        "3170487", 
        6272    
      )}")   
  
  
      println(s"TEST-4...${driver(
        "0100101010", 
        4    
      )}")   
  
  
      println(s"TEST-5...${driver(
        "Z rONcUqWb", 
        -303    
      )}")   
  
  
      println(s"TEST-6...${driver(
        "00419297", 
        5670    
      )}")   
  
  
      println(s"TEST-7...${driver(
        "00", 
        0    
      )}")   
  
  
      println(s"TEST-8...${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;
  }