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: 8025 - 6991 - 3299 + 9670 - 3471
Example Output: 12116

Example Input: 6178 - 1637 - 8197 - 6437 + 4591 - 6995 + 3562 + 9474
Example Output: 11817

Example Input: 1863 + 1447 + 7737
Example Output:
-7321