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: 775 - 7609 + 2326 + 8760 + 4505

Output: -7207


Input: Consider Input: 2458 + 4195 - 6382

Output: 4645


Input: Consider Input: 4848 + 8390 - 6375


Output: 2833