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:
4284 - 8233 + 2781 - 2769 - 5560 + 635 - 1706 + 1965 + 6794

Ex Output:
10377


Ex Input:
3984 + 6501 - 9229 + 7646 + 5492 - 5638 - 3088 - 5675

Ex Output:

7975