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: 473 - 2568 + 9771 - 2525 + 3277 + 261 - 8230 + 6021
Example Output: -5534

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

Example Input: 7488 + 7742 - 7052 - 9938 - 5059 - 9135 + 7745 - 7672
Example Output:
30857