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: 1783 + 1887 + 6517 - 3342 + 4406 + 8123 + 5394 - 5058 + 8527
Example Output: -24671

Example Input: 2605 - 3453 + 5543 + 2400 + 8799 + 3298 + 4981 + 9739 - 178
Example Output: -28524

Example Input: 9089 - 6516 - 4631 + 3315
Example Output:
16921