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.

Input: Consider Input: 5708 + 4556 - 3280 - 4490 + 6094 - 4041

Output: 6869


Input: Consider Input: 1691 - 755 + 5734 - 4774 + 4915 - 7249 - 47

Output: 3867


Input: Consider Input: 6449 - 1226 - 7515 - 5712 - 9188 - 7872


Output: 37962