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: 4117 - 3380 - 4784

Output: 12281


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

Output: 3867


Input: Consider Input: 4300 - 6839 + 4754 + 9697 - 3741 + 9404 - 7012 + 4786 - 6558


Output: -191