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: 3428 - 8444 - 2270 - 3241 - 1368 - 8884 - 6840 - 5265
Example Output: 39740

Example Input: 8171 + 8357 + 171 - 3129 - 6929
Example Output: 9701

Example Input: 7499 - 4982 - 9837 + 2742 - 1162 - 8266 - 4876 + 8522 - 8380
Example Output:
33738