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: 9001 + 6216 - 1478 + 5475 - 8693 - 3911 - 319 + 4768 - 320
Example Output: 7263

Example Input: 6681 - 1947 - 955 + 9470 - 4512 - 9603 + 5822 + 9404 - 8896
Example Output: 7898

Example Input: 1678 - 2253 - 234 - 8420 + 7965 + 4026 + 6472 + 152
Example Output:
-6030