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: 8974 + 8978 - 8097
Example Output: 8093

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

Example Input: 1834 - 3183 - 9924 - 98
Example Output:
15039