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: 4291 + 2761 - 4339 + 8922
Example Output: -3053

Example Input: 4377 + 5604 - 8336 - 2652
Example Output: 9761

Example Input: 4364 + 4363 - 5655 + 5991 + 3879 + 2303 - 3321 + 8300 + 6059
Example Output:
-17555