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: 335 + 4730 + 4604 - 5559 + 7282 - 7812

Output: -2910


Input: Consider Input: 3915 + 4904 + 4887 + 7162 - 3798 + 233 + 1101 - 7758 - 4627

Output: 1811


Input: Consider Input: 6988 + 3970 - 503 - 210 - 7923 + 5850


Output: 5804