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: 1780 - 963 - 3786 - 8938 + 5127 + 4125 + 8911 + 9677
Example Output: -12373

Example Input: 8213 + 7145 + 5203 - 2621 + 1654 - 1844
Example Output: -1324

Example Input: 7222 - 8647 + 1527 + 4398 + 4446 + 6564 - 9989 - 8491
Example Output:
17414