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: 5162 - 4324 - 8160 + 9296 - 1881
Example Output: 10231

Example Input: 9096 - 7913 + 7375 + 7790
Example Output: 1844

Example Input: 9310 + 5151 + 1891
Example Output:
2268