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: 758 + 1664 + 5481 - 1654 - 1804 + 5232 - 9130

Output: 969


Input: Consider Input: 7733 - 8455 - 6291 - 3837 - 994

Output: 27310


Input: Consider Input: 3083 - 4468 - 7941 + 7484 + 2789


Output: 5219