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: 1788 + 4847 - 9342 - 2397
Example Output: 8680

Example Input: 4647 - 2106 + 6760 + 3296 - 9772
Example Output: 6469

Example Input: 1477 + 6645 + 6272 - 3080
Example Output:
-8360