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: 3284 - 2372 - 6880
Example Output: 12536

Example Input: 5000 + 8474 - 7071 - 6976 + 6373 - 466
Example Output: 4666

Example Input: 2167 + 6112 - 47 + 553
Example Output:
-4451