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: 799 + 9104 - 2060 - 779 + 5546 - 9608 + 4006 + 8557 - 3643

Output: -10324


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

Output: 12035


Input: Consider Input: 851 - 6192 - 3664 + 56 + 9906 + 4668 - 5812 + 3070 + 2311


Output: -3492