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: 4095 - 9640 - 5113 - 9355

Output: 28203


Input: Consider Input: 8155 + 6800 - 6839 - 8047 + 3270

Output: 12971


Input: Consider Input: 9817 - 1830 + 3504 - 9480 - 5632


Output: 23255