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: 9231 - 9608 - 4765 - 8085 - 9489

Output: 41178


Input: Consider Input: 3129 - 7101 - 6763 + 9310 + 4977

Output: 2706


Input: Consider Input: 5039 + 6285 - 6573


Output: 5327