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: 1837 - 6362 - 226
Example Output: 8425

Example Input: 5398 + 4622 - 3983 - 2396 + 2403 - 2514
Example Output: 7266

Example Input: 1312 - 814 - 8592 - 4040 - 5158 + 6817
Example Output:
13099