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:
1256 - 3248 - 3709 - 3019

Ex Output:
11232


Ex Input:
775 - 7609 + 2326 + 8760 + 4505

Ex Output:
-7207


Ex Input:
2792 + 880 + 6068 - 1989 + 4376 + 8911 + 6192 + 7186

Ex Output:

-28832