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:
2474 + 4117 - 310 - 2018 - 6488 - 3458 - 1404

Ex Output:
12035


Ex Input:
7291 - 941 - 33 + 3812 + 4851 - 8716 - 6838 - 740

Ex Output:
15896


Ex Input:
3893 + 1301 + 8192 + 1206 - 6036 + 1515 - 5992 - 1236 + 4580

Ex Output:

363