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: 4110 - 9440 + 557 + 7868 - 6315 + 2518 - 9049 + 3905 + 2052

Output: 12014


Input: Consider Input: 812 + 6106 - 2904 + 7738 + 7655 - 6987

Output: -10796


Input: Consider Input: 2327 - 2843 + 738


Output: 4432