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: 1788 + 4847 - 9342 - 2397
Example Output: 8680

Example Input: 3561 + 2090 - 1286 - 2259 - 7069 + 5058
Example Output: 7027

Example Input: 1595 - 5885 - 8433 + 6360 + 4500 - 320 + 3071
Example Output:
2302