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:
3089 - 6778 - 3604 - 1052 - 1332

Ex Output:
15855


Ex Input:
6020 + 1977 + 708 + 1899 + 3704

Ex Output:
-2268


Ex Input:
5721 - 7808 + 2714 - 4149 + 1060 + 2516 - 4264

Ex Output:

15652