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: 556 + 5223 - 5888 + 4866
Example Output: -3645

Example Input: 5360 + 7507 - 3329 + 6345 - 9328 + 3114
Example Output: 1051

Example Input: 3883 - 4251 + 2793 + 7702 + 1574 + 248 + 644 - 9919 - 4713
Example Output:
9805