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: 5473 - 4337 - 6499 - 9119
Example Output: 25428

Example Input: 4151 + 4432 - 9403 + 9800 - 901 + 5508 + 3237
Example Output: -8522

Example Input: 7172 + 6281 - 3555 + 658 + 1521 + 102 + 8657 + 836
Example Output:
-7328