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.

Example Input: 3909 - 4736 + 2593 + 3592
Example Output: 2460

Example Input: 2909 + 1799 - 984 + 4910 + 3253 - 6846 - 8324 - 9048
Example Output: 18149

Example Input: 3184 - 9584 + 1477 + 6422 - 3669 - 9059 - 7288 + 4707 + 4584
Example Output:
15594