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: 6355 - 3589 + 7310 - 5161 + 9803

Output: -2008


Input: Consider Input: 1808 - 5352 - 8697 + 5058 + 8777 + 8089 - 9688 + 9784

Output: -6163


Input: Consider Input: 1730 - 9936 + 1152 + 4916 + 7588 - 505 + 4525 - 4577


Output: -1433