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: 9485 + 6349 - 1527 - 4730 - 5865 + 851 - 7415 - 3548 + 2868
Example Output: 22502

Example Input: 1837 - 6362 - 226
Example Output: 8425

Example Input: 5918 - 9009 - 3385 - 2716 + 3508
Example Output:
17520