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: 5000 + 8474 - 7071 - 6976 + 6373 - 466
Example Output: 4666

Example Input: 86 - 2166 - 8519 - 7184 - 362 - 2203 + 1579 - 1133 + 3978
Example Output: 16096

Example Input: 4153 + 6971 + 3816 - 222 + 6511 - 6845 + 9826 - 3587 + 2908
Example Output:
-15225