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: 395 - 3060 - 445 + 3450 + 3365
Example Output: -2915

Example Input: 5799 + 5384 + 4924 + 5003 + 983 + 2274 - 5524
Example Output: -7245

Example Input: 8492 + 416 - 405 + 5542
Example Output:
2939