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: 5473 - 4337 - 6499 - 9119

Output: 25428


Input: Consider Input: 4117 - 7011 - 9534 - 3901 - 9537 + 6979

Output: 27121


Input: Consider Input: 185 - 9498 - 2685


Output: 12368