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: 3672 + 2445 + 4715 - 5145 - 8515 + 3793 - 3753

Output: 10132


Input: Consider Input: 9485 + 6349 - 1527 - 4730 - 5865 + 851 - 7415 - 3548 + 2868

Output: 22502


Input: Consider Input: 6531 + 91 + 8123 - 4848 + 5956


Output: -2791