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: 6485 + 8165 + 4482 - 4771 + 2626 + 5500 + 8702 - 1649 + 7002

Output: -23572

Input: Consider Input: 8625 - 7177 + 4191

Output: 11611

Input: Consider Input: 9151 + 9940 - 5326 - 9879 - 5499 + 6492
Output: 13423