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:
4242 - 1088 - 4873 + 766 + 1641 + 7003 + 7327 + 5270

Ex Output:
-11804


Ex Input:
1592 + 7031 - 1902 + 5922 - 1351 + 8340 - 2032

Ex Output:
-14416


Ex Input:
9415 - 4482 + 7957 + 5410 + 4961

Ex Output:

-4431