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: 2514 - 3539 - 8491 + 7351 - 1448
Example Output: 8641

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

Example Input: 3586 + 2244 - 5926 - 3410 - 3524 - 4269
Example Output:
18471