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: 2474 + 4117 - 310 - 2018 - 6488 - 3458 - 1404

Output: 12035


Input: Consider Input: 2969 - 5770 - 665 + 516 - 1172 + 4904 - 384

Output: 5540


Input: Consider Input: 9609 - 2173 + 3751 - 2021 + 4850 + 6677 - 3235 + 1586


Output: 174