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:
1783 + 1887 + 6517 - 3342 + 4406 + 8123 + 5394 - 5058 + 8527

Ex Output:
-24671


Ex Input:
4095 - 9640 - 5113 - 9355

Ex Output:
28203


Ex Input:
2853 + 7482 - 3026 + 6753 - 2882

Ex Output:

-5474