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:
1561 - 5861 - 6887 - 8406 - 5941 - 3633

Ex Output:
32289


Ex Input:
9910 + 9584 - 6394 - 5927

Ex Output:
12647


Ex Input:
2894 - 512 + 9841 - 3368 + 8492

Ex Output:

-11559