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:
5299 - 8968 + 5239 + 1119

Ex Output:
7909


Ex Input:
1260 + 6532 + 3162 + 7255

Ex Output:
-15689


Ex Input:
5447 + 5364 + 3194 - 2322 + 8246 + 7739 - 5398

Ex Output:

-11376