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: 8967 + 529 - 1163 - 2651 + 7174 - 2929
Example Output: 8007

Example Input: 8798 - 6887 - 9478 - 7713 + 8512 + 7926 - 8604 + 2947 + 7573
Example Output: 14522

Example Input: 1887 - 377 + 4395 - 7429
Example Output:
5298