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: 981 + 3338 + 96 + 3479 + 574 + 2567 + 3009 + 2356 - 4663
Example Output: -9775

Example Input: 573 - 2172 + 3067 + 6526 - 4690
Example Output: -2158

Example Input: 3062 + 9568 - 9357 + 4733 - 4903 - 934 - 783 + 6983
Example Output:
-2245