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: 3664 - 184 - 3835 + 2124 - 1567 - 8341 - 3628 - 8279
Example Output: 27374

Example Input: 4139 - 6541 - 2616 + 299 - 700 - 6684
Example Output: 20381

Example Input: 436 - 6073 - 9856 - 562 - 4163 - 3969 + 7731
Example Output:
17328