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:
3782 + 4127 - 1265 - 1395 + 2430 + 6990 + 8573 + 8170

Ex Output:
-23848


Ex Input:
4148 + 9216 - 5756 - 5558 + 2801 - 7501 + 1939 + 3102 + 6894

Ex Output:
-989


Ex Input:
9662 - 3292 - 1294 + 4136 + 8800 + 4945 + 4021 - 1664

Ex Output:

-5990