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: 8711 + 5319 - 3967 - 9285 + 2276
Example Output: 14368

Example Input: 5328 + 9563 + 7711
Example Output: -11946

Example Input: 2919 - 2741 + 497 + 5230 + 5250 + 1797 - 4567 + 8995 + 6960
Example Output:
-18502