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: 4810 - 7988 + 5646 + 8226 + 5009 - 1013 + 7246 - 4319 - 1934
Example Output: -6063

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

Example Input: 5630 - 3377 + 9205 - 4071 + 9580 - 7049
Example Output:
1342