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: 1256 - 3248 - 3709 - 3019
Example Output: 11232

Example Input: 2349 - 9730 - 8231 + 6983 + 9097 + 6965 - 2760
Example Output: 25

Example Input: 4793 - 9645 + 2286 - 5304 + 9361 - 4834 - 5898 + 5231
Example Output:
13596