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: 5462 - 3916 + 9462 - 8867 - 7357
Example Output: 16140

Example Input: 808 - 4935 + 288 + 9758 + 8690 + 384 + 4674 + 5769 - 8736
Example Output: -15084

Example Input: 8440 - 6205 + 6666 - 287 + 9658 - 9302
Example Output:
7910