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:
1943 - 4300 + 9696 + 9307 + 2702 - 798 - 26

Ex Output:
-14638


Ex Input:
4325 + 2332 + 1470 - 1881 + 9204 - 2529 - 5460 + 5554

Ex Output:
-4365


Ex Input:
1217 - 9513 + 9464 - 4792 + 6929 - 7168 + 2337 + 3792 + 2206

Ex Output:

-2038