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: 9689 - 3967 - 2592 - 3020 - 6589

Output: 25857


Input: Consider Input: 1701 + 3893 - 695 + 2870 + 5011

Output: -9378


Input: Consider Input: 2654 + 6851 + 8504 + 4521 + 997 + 5143 + 5424


Output: -28786