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: 1930 - 7631 - 6614 + 5805 + 7376
Example Output: 2994

Example Input: 4993 - 9334 - 5415 + 8531 - 5640 + 896 + 3114 - 1984
Example Output: 14825

Example Input: 9135 - 7978 + 761 + 4159 - 5712 + 1172
Example Output:
16733