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: 4377 + 5604 - 8336 - 2652

Output: 9761


Input: Consider Input: 5989 - 6394 + 3845 + 1679 - 5682 + 8226 - 674 - 1284

Output: 6273


Input: Consider Input: 6206 - 5660 - 9098 - 1578 + 717 + 8230 - 5321 - 2846


Output: 21762