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: 169 + 4940 + 7593 - 4532 + 2433 - 9730 - 6448 - 3026 - 2882

Output: 11821


Input: Consider Input: 1000 - 5488 - 4224 - 9515 + 3520 + 4126


Output: 12581