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: 6817 + 2415 - 9368 - 2334
Example Output: 16104

Example Input: 4224 - 9761 - 8262 + 6568 - 5026 + 916 - 5225 - 2454 - 1897
Example Output: 29365

Example Input: 227 - 7560 + 4893 + 4519 - 685 - 2574 - 4889 - 6692 - 7639
Example Output:
20854