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: 321 - 4450 - 5504 - 9901 - 295 - 7018 - 1113 - 5299 - 2387
Example Output: 36288

Example Input: 1260 + 6532 + 3162 + 7255
Example Output: -15689

Example Input: 6284 + 1234 + 9639 + 1470 + 4137 + 9445 + 5309 + 9797 - 4507
Example Output:
-30240