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: 1808 - 5352 - 8697 + 5058 + 8777 + 8089 - 9688 + 9784
Example Output: -6163

Example Input: 7646 + 8509 - 4372 - 9840 - 6377 - 2924 + 869
Example Output: 21781

Example Input: 5684 - 1550 - 3189 + 871 - 8270 - 5 + 7308
Example Output:
10519