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:
7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290

Ex Output:
-3369


Ex Input:
4242 - 1088 - 4873 + 766 + 1641 + 7003 + 7327 + 5270

Ex Output:
-11804


Ex Input:
7941 - 7559 - 2304 + 5223 - 1143 - 7506 + 2767 + 4556 - 5435

Ex Output:

19342