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: 6054 - 4121 + 5615

Output: 4560


Input: Consider Input: 1344 + 7632 - 4322

Output: -1966


Input: Consider Input: 8895 - 3306 + 3854 + 6924


Output: 1423