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: 306 + 2346 - 7752 + 7173
Example Output: -1461

Example Input: 3122 + 3611 + 2993 + 7415 + 587 - 9947 - 4310 + 1514 + 7430
Example Output:
-6171