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:
5162 - 4324 - 8160 + 9296 - 1881

Ex Output:
10231


Ex Input:
8979 - 7069 - 6830 + 3597 + 315 - 526

Ex Output:
19492


Ex Input:
1187 + 9868 - 935 - 5652 + 6627 + 2781 - 7136 + 4176

Ex Output:

-8542