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:
178 + 5236 - 8372 - 6825 + 1044 - 7818 - 4765 + 7418

Ex Output:
14260


Ex Input:
5753 - 4358 + 6312 + 2406 + 5334 - 4718 + 6262

Ex Output:
-5485


Ex Input:
8019 - 1767 + 7108 + 688 + 8124

Ex Output:

-6134