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: 1592 + 7031 - 1902 + 5922 - 1351 + 8340 - 2032
Example Output: -14416

Example Input: 6946 + 6834 - 1169 + 9756 + 2063 - 4750 - 425 + 1121 + 8155
Example Output: -14639

Example Input: 8874 - 1227 - 5855 - 9314 - 7225 - 2032 + 4976 + 8371
Example Output:
21180