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: 1656 - 2355 + 4098 + 8586 + 7634 + 9427 + 9429
Example Output: -35163

Example Input: 9616 - 8145 + 562 + 3160 - 8906 - 360 + 9291 + 7609 + 460
Example Output: 5945

Example Input: 1492 - 1664 + 8464 - 2308
Example Output:
-3000