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: 9689 - 3967 - 2592 - 3020 - 6589
Example Output: 25857

Example Input: 5778 + 1647 - 2800 + 3747 + 3449 + 90 - 2891 + 685
Example Output: 1851

Example Input: 5793 - 5373 + 4141 + 6894 - 3650 - 11 - 4483
Example Output:
8275