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: 7525 + 263 - 1634 + 3644 + 6905 - 167

Output: -1486


Input: Consider Input: 1724 - 4426 - 960 - 8997 - 5797 + 8037 - 7699 + 3023

Output: 18543


Input: Consider Input: 5708 + 4556 - 3280 - 4490 + 6094 - 4041


Output: 6869