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: 7442 + 227 + 52 + 2436 - 3303 + 8408 + 4314
Example Output: -4692

Example Input: 136 + 9772 - 2848 - 4980 + 6156 - 883 + 5407 + 3211
Example Output: -15699

Example Input: 6072 - 3133 + 8542 + 4328 - 6851
Example Output:
3186