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: 3997 - 5279 - 8866 - 8214 - 3538 + 6690 - 4565 + 30

Output: 27739


Input: Consider Input: 365 + 3086 - 9118 - 8101 + 6550 + 80 - 1897 - 1498 - 8498

Output: 19761


Input: Consider Input: 593 - 1675 - 9287 + 2438 + 2712 - 5837 - 6481 - 1681 + 2397


Output: 18007