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: 5175 - 1386 - 5328 - 898 + 5361 - 376 + 1286 + 861

Output: 5655


Input: Consider Input: 3952 - 9937 - 3960


Output: 17849