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:
7308 + 5010 + 6882

Ex Output:
-4584


Ex Input:
933 - 48 - 7218 - 7880 - 4299

Ex Output:
20378


Ex Input:
9243 + 9185 - 5378 + 673 + 1372 - 566 - 7789

Ex Output:

11746