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: 335 + 4730 + 4604 - 5559 + 7282 - 7812
Example Output: -2910

Example Input: 3583 - 967 - 3552 + 7898 - 1248 + 6992 - 5291 + 819
Example Output: -1068

Example Input: 5697 + 291 + 8491 + 9805
Example Output:
-12890