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: 2306 - 650 - 3209

Output: 6165


Input: Consider Input: 2848 - 3478 + 9230 + 3585 + 8537 - 3821

Output: -11205


Input: Consider Input: 4233 + 9432 - 4046


Output: -1153