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: 6355 - 3589 + 7310 - 5161 + 9803
Example Output: -2008

Example Input: 1540 + 6977 + 9400 - 5524 - 1970 + 8397 - 6006 + 3183
Example Output: -12917

Example Input: 8529 + 2284 - 7226 + 8133 + 6564
Example Output:
-1226