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: 7591 + 2427 + 6553 + 4047 - 9300 + 2235 + 7278
Example Output: -5649

Example Input: 2178 - 6447 + 5843 + 9653 + 4633 - 5887 + 8815 - 6635 + 178
Example Output: -7975

Example Input: 8923 - 387 - 9695 - 3271 - 9616 + 3623 + 2710
Example Output:
25559