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: 9990 - 8613 - 152 + 4529
Example Output: 14226

Example Input: 6163 + 7356 + 5264 - 4766 + 9373 + 1271
Example Output: -12335

Example Input: 1017 + 2664 - 7443 + 6373 + 336
Example Output:
-913