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: 8338 + 7035 - 2067 - 1210 + 9433 + 1604

Output: -6457


Input: Consider Input: 5860 + 3039 - 7874 - 3584 - 144

Output: 14423


Input: Consider Input: 1208 + 2612 + 8955


Output: -10359