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:
7409 + 7579 + 4759 + 5088

Ex Output:
-10017


Ex Input:
5162 - 4324 - 8160 + 9296 - 1881

Ex Output:
10231


Ex Input:
9033 + 4479 + 5125 - 178 + 659 - 2580 + 5579 - 2300 + 6531

Ex Output:

-8282