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: 4195 + 6940 - 1053 - 4433 + 1540
Example Output: 1201

Example Input: 3112 - 4832 - 7889 - 6855 - 5294 - 5908 + 9757 - 9064
Example Output: 33197

Example Input: 2404 - 4 + 7988 - 9604 + 7479 - 3686 + 6996 - 1111
Example Output:
-5654