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: 4151 + 4432 - 9403 + 9800 - 901 + 5508 + 3237
Example Output: -8522

Example Input: 509 + 4840 + 5618 + 9163 + 802
Example Output: -19914

Example Input: 6281 + 5479 + 567 + 7843 + 4644 - 9418 + 2210 + 8755 + 9108
Example Output:
-22907