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: 9085 + 2845 - 6159 + 1404 + 2110 - 8797

Output: 17682


Input: Consider Input: 3909 - 4736 + 2593 + 3592

Output: 2460


Input: Consider Input: 7399 - 2863 + 5305 - 8176 + 126 + 859 + 2684 + 8006


Output: 1458