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: 1783 + 1887 + 6517 - 3342 + 4406 + 8123 + 5394 - 5058 + 8527

Output: -24671


Input: Consider Input: 5299 - 8968 + 5239 + 1119

Output: 7909


Input: Consider Input: 1858 - 8990 - 4168 - 2222 + 3429 + 3227


Output: 10582