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:
9488 + 7771 + 5889 + 9584 + 3302 - 1602 + 5806 - 8895 - 8030

Ex Output:
-4337


Ex Input:
6042 + 4328 - 5171 + 23 + 4485 + 8072 + 4298

Ex Output:
-9993


Ex Input:
1999 - 5055 + 6736 - 8829 + 7010 - 2968 - 259 + 5904

Ex Output:

-540