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:
9237 + 5388 - 46 + 2616 + 8227 - 3578 - 5065 + 1176

Ex Output:
519


Ex Input:
298 + 1699 + 1367 + 5001

Ex Output:
-7769


Ex Input:
3939 + 5424 - 9771 + 3032 + 7877 + 6925

Ex Output:

-9548