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:
5753 - 4358 + 6312 + 2406 + 5334 - 4718 + 6262

Ex Output:
-5485


Ex Input:
7298 + 5069 + 5167 + 9387 - 6886

Ex Output:
-5439


Ex Input:
8192 + 5732 - 9342

Ex Output:

11802