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: 3083 - 4468 - 7941 + 7484 + 2789

Output: 5219


Input: Consider Input: 5342 - 6456 - 9929 + 3119 - 1242 + 314

Output: 19536


Input: Consider Input: 694 + 4432 - 9053


Output: 5315