In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Example Input: 6485 + 8165 + 4482 - 4771 + 2626 + 5500 + 8702 - 1649 + 7002
Example Output: -23572

Example Input: 2144 - 4158 + 4207
Example Output: 2095

Example Input: 1178 - 5141 + 6654 - 4251 - 5504 - 2148 - 9634 - 3269 - 4943
Example Output:
29414