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: 8338 + 7035 - 2067 - 1210 + 9433 + 1604

Output: -6457


Input: Consider Input: 5708 + 4556 - 3280 - 4490 + 6094 - 4041

Output: 6869


Input: Consider Input: 7648 - 1897 - 6791 - 2517 + 9169 - 9345 - 5838 - 8645


Output: 33512