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: 1678 - 831 + 1988 - 3248 - 7672 + 8515 + 5236 - 2764 - 6078
Example Output: 6532

Example Input: 4305 + 975 + 8169 + 4274 - 1910
Example Output:
-7203

