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: 5175 - 1386 - 5328 - 898 + 5361 - 376 + 1286 + 861
Example Output: 5655

Example Input: 875 + 1299 - 1721 - 4432 - 7136 - 2468
Example Output: 15333

Example Input: 3123 + 9519 - 2864 + 9440 - 756 + 252
Example Output:
-12468