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: 3071 - 5299 + 206 + 3214 + 6040 + 5785 - 6760 - 8070
Example Output: 7955

Example Input: 7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290
Example Output: -3369

Example Input: 7891 - 7168 - 782 - 9276 - 729 + 4276 - 4768
Example Output:
26338