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: 1075 - 4704 - 8582 + 2960 + 8010 + 617 - 4972 + 2013
Example Output: 5733

Example Input: 569 + 2078 + 2757 - 9211
Example Output: 4945

Example Input: 3730 + 7896 + 6897 - 6346 - 2461 + 462 + 3581 - 375 - 286
Example Output:
-5638