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: 3586 - 8301 + 9044 + 6100 - 8837 + 8230 + 7670 - 8406
Example Output: -1914

Example Input: 4839 - 962 + 7552
Example Output: -1751

Example Input: 673 - 5127 + 287 - 9531 - 2881 - 7388 - 4826 + 9305
Example Output:
20834