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:
9824 + 9255 - 8146 - 8393 - 6949 - 3238 + 2641 - 4068 + 4633

Ex Output:
24089


Ex Input:
1678 - 831 + 1988 - 3248 - 7672 + 8515 + 5236 - 2764 - 6078

Ex Output:
6532


Ex Input:
5969 - 5917 - 8188 - 5842 - 6176 - 7195 + 7550

Ex Output:

31737