title: Calculate Maximum Value Using Sign Two Numbers String
signature: function calculateMaximumValueUsingSignTwoNumbersString(str) {
test_code: 
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function convertToString(value) {
      return JSON.stringify(value, function (key, val) {
          if (val instanceof Set) {
              return Array.from(val);
          } return val;});
  }
  
  function validateSolution(actual, expected){
      return convertToString(actual)===convertToString(expected);
  }
  
  function driver(str, expected){
      try{
          if (validateSolution(PLACEHOLDER_FN_NAME(str),expected)){
              return "PASSED";
          }
          return "FAILED";
      } catch (error) {
        return error.name;
      }
      
  }
      
  function main(){
    let result = '';
    result = driver("pR", 2176);
    console.log(`TEST-0...${result}`);
  
    result = driver("9518", 368);
    console.log(`TEST-1...${result}`);
  
    result = driver("1", 1);
    console.log(`TEST-2...${result}`);
  
    result = driver("3170487", 6272);
    console.log(`TEST-3...${result}`);
  
    result = driver("0100101010", 4);
    console.log(`TEST-4...${result}`);
  
    result = driver("Z rONcUqWb", -303);
    console.log(`TEST-5...${result}`);
  
    result = driver("00419297", 5670);
    console.log(`TEST-6...${result}`);
  
    result = driver("00", 0);
    console.log(`TEST-7...${result}`);
  
    result = driver("r", 66);
    console.log(`TEST-8...${result}`);
  
    process.exit(0);
  };
  
  if (require.main === module) {
    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;
  }