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: 5292 + 3623 + 7450

Output: -5781


Input: Consider Input: 3089 - 6778 - 3604 - 1052 - 1332

Output: 15855


Input: Consider Input: 6481 + 7589 + 3547 - 3632 - 3306 + 5740 - 6814


Output: 3357