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: 933 - 48 - 7218 - 7880 - 4299

Output: 20378


Input: Consider Input: 2226 - 7329 - 3547

Output: 13102


Input: Consider Input: 432 - 9641 - 9656 + 5044 + 3114


Output: 11571