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: 1860 - 6675 + 8615 + 485 + 6302 - 3385 + 1568

Output: -5050


Input: Consider Input: 8988 + 9565 + 4047 - 1723 + 7160 - 8838 + 5611 + 7126

Output: -13960


Input: Consider Input: 7562 + 3101 - 2519 - 6106 + 5125


Output: 7961