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: 5856 - 8885 - 8510 + 7879 + 2100

Output: 13272


Input: Consider Input: 473 - 2568 + 9771 - 2525 + 3277 + 261 - 8230 + 6021

Output: -5534


Input: Consider Input: 2116 + 5506 - 2825 + 5340 + 4139 - 7275 - 5135 - 7612 - 5305


Output: 15283