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:
6763 - 8006 - 6381 - 8852 + 6218 + 3788 + 7296

Ex Output:
12700


Ex Input:
7202 - 7230 - 3695 + 2434 + 5934 + 5439 + 687 + 2011

Ex Output:
1622


Ex Input:
7361 - 2062 - 4608 - 3438 + 7667 - 6196 - 9334 + 9246 + 225

Ex Output:

15861