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: 4095 - 9640 - 5113 - 9355
Example Output: 28203

Example Input: 8433 + 1618 + 9022 - 2431 - 8097 + 8068
Example Output: 253

Example Input: 1602 + 5784 - 8866 + 7222
Example Output:
-2538