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: 8085 + 9109 - 9653
Example Output: 8629

Example Input: 2514 - 3539 - 8491 + 7351 - 1448
Example Output: 8641

Example Input: 7005 + 6226 + 6490 + 752 - 7815 - 7249 + 8726 + 5007 + 2853
Example Output:
-7985