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:
1626 + 448 + 6034

Ex Output:
-4856


Ex Input:
5989 - 6394 + 3845 + 1679 - 5682 + 8226 - 674 - 1284

Ex Output:
6273


Ex Input:
8855 - 1206 + 6437 + 7440 + 9076 + 767 - 9344 + 4552

Ex Output:

-8867