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: 4377 + 5604 - 8336 - 2652

Output: 9761


Input: Consider Input: 3681 + 1303 + 5556 + 9895 - 5012 - 6662

Output: -1399


Input: Consider Input: 4590 - 3340 + 117 - 7393 + 1919 + 5306 + 7764 - 512


Output: 729