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: 2306 - 650 - 3209
Example Output: 6165

Example Input: 2848 - 3478 + 9230 + 3585 + 8537 - 3821
Example Output: -11205

Example Input: 4180 - 3276 - 1575 + 9963 + 3933 - 5330 + 1193 + 8637
Example Output:
-9365