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: 8025 - 6991 - 3299 + 9670 - 3471
Example Output: 12116

Example Input: 4325 + 2332 + 1470 - 1881 + 9204 - 2529 - 5460 + 5554
Example Output: -4365

Example Input: 5611 + 1727 - 4326
Example Output:
8210