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.

Ex Input:
2605 - 3453 + 5543 + 2400 + 8799 + 3298 + 4981 + 9739 - 178

Ex Output:
-28524


Ex Input:
2848 - 3478 + 9230 + 3585 + 8537 - 3821

Ex Output:
-11205


Ex Input:
8102 - 8751 + 2221 + 2184 + 1564 + 3629 + 9987 + 2840

Ex Output:

-5572