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: 5798 + 7484 + 9307 + 3033 - 7750 + 6782 + 2330 + 2957 - 714

Output: -17631


Input: Consider Input: 933 - 48 - 7218 - 7880 - 4299

Output: 20378


Input: Consider Input: 9549 - 507 + 659 + 3404 - 9243


Output: 15236