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: 775 - 7609 + 2326 + 8760 + 4505
Example Output: -7207

Example Input: 9051 - 8971 + 6555 - 1135 - 4091 + 9374 + 9487 + 1868
Example Output: -4036

Example Input: 4551 + 6870 + 8209
Example Output:
-10528