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: 1780 - 963 - 3786 - 8938 + 5127 + 4125 + 8911 + 9677

Output: -12373


Input: Consider Input: 5409 - 5550 + 3864 - 5911 + 5222

Output: 7784


Input: Consider Input: 3373 - 4282 + 5041 - 6457 + 3193


Output: 5878