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:
6603 - 3783 + 3030 - 5787 + 8478 + 3046 - 1629

Ex Output:
3248


Ex Input:
3909 - 4736 + 2593 + 3592

Ex Output:
2460


Ex Input:
6662 + 3262 + 7144

Ex Output:

-3744