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: 3055 - 3062 - 5311

Output: 11428


Input: Consider Input: 6570 + 2902 + 9219 - 6971 + 6886 + 765

Output: -6231


Input: Consider Input: 8694 - 9804 + 1852 + 4717 + 9101 - 6173 + 6401 - 2510 - 1051


Output: 6161