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: 2862 - 964 + 1644
Example Output: 2182

Example Input: 6927 - 2357 + 8911 - 4674 - 2728 + 9726 - 1304 - 3277
Example Output: 2630

Example Input: 7629 + 6966 - 4792 + 512 + 8559
Example Output:
-3616