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: 1783 + 1887 + 6517 - 3342 + 4406 + 8123 + 5394 - 5058 + 8527
Example Output: -24671

Example Input: 1943 + 6084 + 8719 + 2400 + 8595 - 7077 + 1264
Example Output: -18042

Example Input: 1737 + 2382 + 6574 + 8864
Example Output:
-16083