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: 5610 - 3034 + 9312 + 7337 + 2731 + 8581 + 5926 - 2102 + 2137

Output: -25278


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

Output: -2910


Input: Consider Input: 9491 + 8647 - 4571 + 8815 - 4816 - 8552 + 1794


Output: 8174