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:
6946 + 6834 - 1169 + 9756 + 2063 - 4750 - 425 + 1121 + 8155

Ex Output:
-14639


Ex Input:
1312 - 814 - 8592 - 4040 - 5158 + 6817

Ex Output:
13099


Ex Input:
395 - 5610 - 1542 + 4339 + 8603 - 3784

Ex Output:

-1611