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: 9237 + 5388 - 46 + 2616 + 8227 - 3578 - 5065 + 1176

Output: 519


Input: Consider Input: 933 - 48 - 7218 - 7880 - 4299

Output: 20378


Input: Consider Input: 4229 - 5058 - 493 - 3792 - 1977 - 9681 - 2731 + 3948 - 6562


Output: 30575