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: 4272 + 6013 - 9409 - 6130 + 9575 + 2198
Example Output: 2025

Example Input: 9001 + 6216 - 1478 + 5475 - 8693 - 3911 - 319 + 4768 - 320
Example Output: 7263

Example Input: 4838 + 9606 + 7990 + 3465 + 7981 - 7655 - 7783
Example Output:
-8766