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: 4733 + 1935 - 5989 + 2634 - 6798 + 9853 + 9265 - 14 - 4165

Output: -1988


Input: Consider Input: 1922 - 413 - 5668

Output: 8003


Input: Consider Input: 2234 + 8260 - 9782


Output: 3756