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:
5856 - 8885 - 8510 + 7879 + 2100

Ex Output:
13272


Ex Input:
3556 - 1722 + 9362 - 7616 - 7893

Ex Output:

11425