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: 169 + 4940 + 7593 - 4532 + 2433 - 9730 - 6448 - 3026 - 2882
Example Output: 11821

Example Input: 4226 - 3951 + 2613
Example Output: 5564

Example Input: 8732 - 4760 + 9372
Example Output:
4120