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: 8341 + 2746 - 2959 - 9678 + 5173 + 317

Output: 12742


Input: Consider Input: 5860 + 3039 - 7874 - 3584 - 144

Output: 14423


Input: Consider Input: 2410 - 6452 + 8250 - 4738 + 9570 + 9372


Output: -13592