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:
9292 - 7471 - 1025 - 8458 + 444

Ex Output:
25802


Ex Input:
2603 + 1868 - 4242

Ex Output:

4977