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:
5860 + 3039 - 7874 - 3584 - 144

Ex Output:
14423


Ex Input:
6433 + 6891 + 2386 - 7923 - 2419 + 7641

Ex Output:
-143


Ex Input:
5469 - 9910 + 9448 + 3352 + 7905 + 8739

Ex Output:

-14065